Our two lungs are made up of a complex latticework of tubes, which are suspended, on either side of the heart, inside the chest cavity on a framework of elastic fibers.
我们的两片肺是由复杂的管子交叉网组成的，在心脏的两侧悬浮着，在有弹力纤维构成的框架的胸腔里。
The same force tends to reduce the seal on the pressure side with the result that bonnet cavity and the valve stem packing are nearly always subjected to maximum pipeline pressure.
而压力侧以相同的力削弱了密封，这样使阀盖腔室和阀杆填料几乎总是承受最大管道压力。
Expanding circulating oil cavity on hydrogen side can make circulation free.
扩大氢侧回油腔的容积改进了国产机回油不畅的问题。
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