Can you go to the eye center of Sun Yat sen University in the ev

1. Zhongshan Eye Hospital of Sun Yat Sen Medical University is a very professional hospital. The doctors in it are also very authoritative and have a good service attitude, but the cost is relatively expensive.

2. Pit, next to it, there is a place called Kengzi

3. It's a company. The center you mentioned later is the optometry center of Sun Yat sen University Affiliated ophthalmic hospital (Sun Yat Sen Ophthalmic Center). The optometry sheet you opened in the outpatient department was tested in this center
in addition, there is a contact lens fitting center nearby, which is also the affiliated hospital.

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5. This is not simple
it's like riding a bicycle, where the pedals move in a circle, and your feet are on the pedals, don't your knees go up and down? If you know the principle of diesel engine, you will think it more reasonable
it's very antique. Unless it is a very backward place, or for tourism, our country will not let it on the railway
it's good that you love to study. But for railway rickshaws, that's enough. Although its appearance is bigger than that of a tricycle, its structure is almost the same, maybe simpler.

6. Generally speaking, it's better for big experts to be before 4 o'clock. If you look at Lin Xiaoming, it may be before 2 o'clock

7. LEGO version of Star Wars is a combination of "Lego building blocks" and "Star Wars", which are the favorite themes of the two most popular families in their childhood. It is based on the first three parts of "Star Wars" (threatening the latent episodeithe phantom menace, attacking the clones by replicators, attacking the clones by all means) The Revenge of the Sith II is based on the action adventure game[ 1] According to the LEGO toy design of the lovely character image is the biggest feature of this work, the game has more than 30 characters to operate, and the scene is based on the "Star Wars" classic scene design. In the aspect of movement, the operation of this work is very simple. Each character has basic attack, jump and special skills. The Jedi can use lightsaber to attack and rebound the enemy's bullets; And the force can be used to manipulate various props in the scene in a variety of ways. For example, you can use the force to stack various objects so that you can reach a higher place. Many characters have their own special abilities. Amidala has a hook that can reach a very high place, while jarjarbinks has the jumping power that is far beyond the ordinary people. In each level, players can fight with their AI partners, and another player can join you at any time to help you fight or el with you. In the case of cooperation, two players can solve the puzzle one by one, and the AI controlled characters will also be very helpful, but the most interesting thing is to cooperate with real people. LEGO button will be obtained after the battle, and this kind of button is the money in the game. In the various tasks of this work, player 1 is generally the operation of characters related to the plot. For example, on the Trade Federation ship, the players operate qui gonjinn and Obi Wan Kenobi, while on the level of escaping from the palace, they operate Amidala and captain Panaka. But in the middle of the task, you can also meet assistants and operate them to accomplish other goals. If you collect a certain amount of money, you can buy more characters. In this work, there is a "freeplay" mode. In this mode, you can use all the collected characters to play the levels that have passed before, and you can switch characters at any time in the middle of the game.

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9. The electric glass lifter for car is mostly composed of motor, recer, guide rope, guide plate, glass mounting bracket, etc. Due to the different materials or manufacturing methods of guide rope, it can be divided into three types of electric glass lifters: rope wheel type, flexible shaft type and plastic belt type. The first two are using steel wire rope as guide rope, and the latter is using plastic belt as guide rope

take the commonly used rope wheel type electric glass lifter as an example, it is composed of motor, recer, steel wire rope, guide plate and glass mounting bracket. During installation, the door and window glass is fixed on the glass mounting bracket, and the glass guide groove is parallel to the steel wire rope guide plate. Turn on the motor to drive the recer to output power, pull the wire rope to move the glass mounting bracket, and force the door and window glass to move up or down in a straight line. The guide rope of the plastic belt type electric glass lifter adopts the plastic belt with holes, which is used to move and position the plastic belt to control the lifting of the door and window glass

the manual door and window is to replace the electric part of the electric door and window with mechanical components by shaking the handle in the door by hand.

10. Working principle of hand spinning wheel:
the spindle of hand spinning wheel is installed on the rope pulley, which is also driven by the rope string, which is called vertical spinning wheel. Horizontal is operated by one person, while vertical is operated by two persons at the same time. Because horizontal is more suitable for one household's rural sideline, it has been handed down along the custom< It is speculated that hand spinning wheel appeared in the Warring States period. It can spin hemp, silk, cotton, etc. Since the Han and Tang Dynasties, China's gorgeous silk has been exported to the west through the "Silk Road". It can be seen that brocade, silk, silk and silk of that time had a fairly high textile level
spinning wheel is an equipment that uses fiber materials such as wool, cotton, hemp, silk and other proction lines or yarns. A spinning wheel usually has a hand driven wheel and a spindle. It is composed of crank, step rod, convex nail and other parts. The step rod drives the rope pulley and spindle to rotate through the crank to complete the twisting and drafting work
the spinning wheel is composed of wheel, handle, spindle, bracket and base. The base of the spinning wheel made of wood is 70 cm long, in the shape of "I"“ There is a small bracket on the upper cross of "Gong"“ There are two square columns (large supports) at the bottom of the column. The column distance is 50 cm. There is a round hole for installing the driving axle at the upper end of the column, which is 35 cm away from the base. There is a crank at one end of the shaft
the spokes of the driving wheel are strip-shaped thin plates with circular holes in the middle, 60 cm long, 8 cm wide in the middle and 6 cm wide at both ends. There are six spokes in total, and three spokes at each end of the shaft. The spokes fixed by the cord are spaced 60 degrees apart and are in the shape of open umbrellas. The two "shoulders" of the shaft block the two sets of spokes on both sides of the shaft so that they cannot meet. The two groups of spokes are tensioned alternately in zigzag shape by the rope, and the spokes are slightly bent inward
the tension zigzag rope is the rim (W) of the wheel ǎ There is a transmission rope hanging on the rim of the car. The ingot pole is 30 cm long, 0.5 cm in diameter and sharp steel wire at both ends. A wooden driving wheel with a diameter of 2 cm is fixed in the middle of the ingot pole. The driving wheel and the spindle wheel are driven by a tensioned rope. Add a small amount of lubricating oil to the shaft When spinning, one hand (left hand) holds two strands of yarn and sticks the end to the spindle with water, the other hand (right hand) shakes the handle, and the driving wheel drives the spindle to rotate rapidly. The height of the yarn holder (left hand) spins the two strands of yarn together with the spindle, and moves backward while placing the yarn, When the spun yarn reaches the maximum length, raise the hand and store (wind) the yarn on the spindle. Then, the yarn holder falls back to the height level with the spindle to spin the next section of yarn. This operation has to be repeated to finish a thread.