Go to Xukou central middle school

1. Rx470 is not mine card, only depends on luck

2. Buy or buy a genuine or a treasure, light is not to see out, after all, idle fish belong to second-hand do not return do not change, take your luck

3.

Including high-pressure roller mill, ball mill, magnetic separator, jaw crusher, vibrating screen, beneficiation shaker, belt conveyor, flotation machine, dryer, classifier, electromagnetic vibration feeder, spiral chute and other grinding and beneficiation equipment and supporting machines

ball mill

ball mill is the key equipment for crushing materials after crushing. This type of mill is filled with a certain number of steel balls as grinding medium in its cylinder

it is widely used in cement, silicate procts, new building materials, refractories, chemical fertilizer, black and non-ferrous metal mineral processing, glass ceramics and other proction instries, dry or wet grinding of various ores and other grindable materials. Ball mill is suitable for grinding all kinds of ores and other materials. It is widely used in mineral processing, building materials and chemical instry. It can be divided into dry grinding and wet grinding. According to the different ways of ore discharge, it can be divided into grid type and overflow type

magnetic separator

magnetic separator is a screening equipment used to remove iron powder from reused powdery particles. After the pulp flows into the tank body through the feeding box, the ore particles enter into the feeding area of the tank body in a loose state under the action of the water flow of the feeding spout pipe. Under the action of the magnetic field, the magnetic particles gather to form a "magnetic cluster" or "magnetic chain". The "magnetic cluster" or "magnetic chain" moves to the magnetic pole under the action of the magnetic force in the pulp and is adsorbed on the cylinder

because the polarity of the magnetic pole is alternately arranged along the rotation direction of the cylinder, and it is fixed when working, the phenomenon of magnetic stirring occurs when the "magnetic cluster" or "magnetic chain" rotates with the cylinder e to the alternation of the magnetic poles, and the gangue and other non-magnetic minerals mixed in the "magnetic cluster" or "magnetic chain" fall off ring the overturning, Finally, the "magnetic mass" or "magnetic Lotus" absorbed on the surface of the cylinder is the concentrate

vibrating screen

the vibrating screen works by using the reciprocating rotary vibration generated by the vibrator excitation. The upper rotary hammer of the vibrator makes the screen surface proce plane rotary vibration, while the lower rotary hammer makes the screen surface proce cone rotary vibration. The combined effect makes the screen surface proce double rotary vibration. Its vibration trajectory is a complex space curve

The projection of the curve on the horizontal plane is a circle, while on the vertical plane it is an ellipse. The amplitude can be changed by adjusting the exciting force of the up and down rotating weights. By adjusting the space phase angle of the upper and lower weights, the curve shape of the motion track of the screen surface can be changed, and the motion track of the material on the screen surface can be changed

extended data

proction line development trend

① continue to develop to large scale. Large scale includes large conveying capacity, large single machine length and large conveying angle. The length of the hydraulic conveying device has reached more than 440 km. The length of a single belt conveyor has been nearly 15 km, and there has been a & quot; Belt conveyor & quot;. Many countries are exploring a more perfect conveyor structure for long distance and large capacity continuous conveying of materials

(2) expand the application scope of conveyor. The development of high temperature, low temperature conditions, corrosive, radioactive, flammable materials in the environment work, and can transport hot, explosive, easy to agglomerate, sticky material conveyor

(3) make the structure of the conveyor meet the requirements of the automatic control of the material handling system for a single machine. For example, the trolley conveyor used by the post office for automatic sorting of parcels should be able to meet the requirements of sorting action

(4) recing energy consumption to save energy has become an important aspect of medical research in the field of transportation technology. The energy consumption of 1km per ton of material has been taken as one of the important indexes of conveyor selection

(5) rece the st, noise and exhaust gas proced by various conveyors ring operation

4. Today, I just saw pleasant goat in the mass cinema. At present, there are only three places in Chengde that can watch movies, namely, the mass cinema, the stadium (Chengde Grand Theater) and the Chengde theater

there are two halls in the mass cinema. In addition to the years when the building was demolished and built, the mass cinema has always been playing movies. It is the oldest cinema in Chengde city. The 12 JBL surround sound speakers (excluding the main speaker and the center speaker) and the high-grade screen hanging on the wall around it should be the cost-effective ones
in the 1980s, Chengde theater began to show films in addition to the two sessions, opera and folk art performances, which was very popular. Especially in the years when the mass cinema was demolished, Chengde theater was the only cinema in Chengde city. In recent years, the facilities of Chengde theater were old, and the government did not pay attention to them. Now it has been reced to showing low-cost projection films in the daytime, In the evening, the two people turn to a private venue. If it goes on like this, the antique Chengde theater is not far from demolition
e to policy reasons, the stadium is no longer responsible for sports competitions. The Cultural Bureau and Changda have cooperated to set up Chengde Grand Theater, which has a large investment, a large space and new facilities. Since last year, many cadres, petty bourgeoisie and lovers who pay high prices to watch 3D movies have chosen to go there, but the audience is far less than the old popular cinema in the city center

in the past, workers' clubs, railway clubs and Yunling cinemas all showed films, and even hemp textile factories, mining machinery factories and Chenggang in the suburbs had their own cinemas. Later, the whole wood came into being.

5. Oref, a Swedish scientist, was poor when he was young and regarded as a backward student by his teachers. But his mother has been supporting him. He is also diligent and studious, and he spares time like gold. He said a wise saying about time and ideal: "Whoever steals a minute of oref's time is stealing Sweden." Later he became a scientist.

6. There is no shortcut defined as Alt + R in the computer
shortcut key type and function:
F1 displays the help content of the current program or windows
F2 when you select a file, This means "Rename"
F3 when you are on the desktop, open the "find: all files" dialog box
F10 or ALT to activate the menu bar of the current program
windows key or Ctrl + ESC to open the start menu
Ctrl + Alt + delete to open and close the program dialog box in Win9x
delete to delete the selected items, Will be put into the recycle bin
Shift + delete to delete the selected item, if it is a file, Will be directly deleted instead of being put into the recycle bin
Ctrl + n create a new file
Ctrl + O open the open file dialog box
Ctrl + P open the print dialog box
Ctrl + s save the current operation file
CTRL + X cut the selected items to the clipboard
Ctrl + insert or Ctrl + C the selected items to the clipboard
Shift + insert or CTRL + V pastes the contents of the clipboard to the current position
Alt + backspace or Ctrl + Z cancels the previous operation
Alt + Shift + backspace redo the previous operation? Mou Tong? br>
windows key + m minimizes all open windows
windows key + Ctrl + m will restore the size and position of the window before the previous operation
windows key + e open Explorer
windows key + F open find: All Files dialog box
windows key + R open run dialog box
windows key + break open system properties dialog box
windows key + Ctrl + F open find: computer dialog box Box
Alt + F4 close the current application program
Alt + spacebar open the menu in the top left corner of the program
Alt + Tab switch the current program
Alt + ESC switch the current program
Alt + enter switch the MSDOS window running under windows between window and full screen state
print screen the current screen to the clipboard in image mode
Alt + print screen The active program window is copied to the clipboard by image mode
Ctrl + F4 close the current text in the current application (such as word)
Ctrl + F6 switch to the next text in the current application (add shift to jump to the previous window)

close the current window or exit the program Alt + F4
Ctrl + C
cut Ctrl + x
delete
delete />Paste CTR L + V

7. The reflector is more convenient

8. That's your problem with Warcraft
Alt + R turns on / off the wild unit camp marker, green for small monsters, yellow for medium monsters, and red for big monsters

9. You can only press Ctrl + R