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| Before installation should clean dust and sundries in cavity of valve and the pipeline, to avoid affect the sealing performance. |
中文意思：
安装前应消除阀门腔内及管道内尘屑杂物，以免影响密封性能。 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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| 1 |
Before hitting the house, Edwards hit a light pole and a traffic control box. He was treated for minor injuries.
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| 2 |
Before holiday I join in a skee class.
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| 3 |
Before impact, you put energy into the racquet to get it up to speed for the collision, and during the impact you put in a little more energy to aim the shot.
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| 4 |
Before initial dose, depress pump 4-5 times or until primed.
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| 5 |
Before install servos, All the servos should be installed with servos rocker which have rasped and install some accessories as shown in the diagram.
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| 6 |
Before installation should clean dust and sundries in cavity of valve and the pipeline, to avoid affect the sealing performance.
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| 7 |
Before installation should completed clean inner of the pipeline, particles or sundries are not allowed to be contained in the medium to avoid the damage of valve sealing surface.
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| 8 |
Before installation, check line of flow through valve so that valve will function properly.
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| 9 |
Before installing needs cleaning tube,remove filth.
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| 10 |
Before intervening in any circuit which has a gas filled pressure vessel, the pressure must be discharged from the circuit.
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| 11 |
Before investing in expensive equipment, make a serious commitment to exercise. Research the relative benefits and drawbacks of different equipments, such as treadmills, stationary bikes, free weights, and so on.
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