| 释义 |
- 真空密封：通过抽出包装袋内的空气，使其与外界隔绝，达到保鲜、防潮、防氧化等效果的一种包装方式。
1 [真空]?真空密封 ... 真空密封，真空封接：vacuum seal 真空密封：vacuum seal 真空密闭：tight,vacuum ... 2 ?真空封接 ... vacuum sampling method ==> 真空采气法 vacuum seal ==> 真空封接 vacuum seal(tight) ==> 真空密封 ... 3 ?真空密封装置 ... 真空膜盒无液的不装水银的：aneroid 真空密封装置：vacuum seal 真空密封外壳：vacuum envelope ... 4 ?真空密闭 ... vacuum returnline system 真空回水系统 vacuum seal 真空密闭 vacuum space 真空空间 ...
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Magnetic Liquid is currently the most widely used is a dynamic seal, especially for vacuum sealing, seal, such as gas or dust for. 磁性液体目前最广泛的应用是动态密封，特别是用于封真空、封气体或用于防尘等。 - 2
So it's better to just try to, you know, seal those crevices and vacuum them if they do get in. 所以最好是试着密封家里的缝隙，如果有进来的，那就用真空吸尘器吸。 - 3
Sprinkler pump shell cracks, or impeller, leaf damage, or seal damage, will affect the degree of vacuum, water pumping, water pressure is too small or the phenomenon. 洒水车水泵泵壳出现裂纹、或者叶轮、倒叶损坏、或者水封破损，都会影响真空度，出现水抽不上来，或者水压过小的现象。
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