The intake or exhaust valves are not sealing properly, again allowing a leak during compression.
进气阀和排气阀密封有问题也会造成压缩时漏气。
Properly insulating your attic and sealing any leaks under doors or around windows, will greatly improve the effectiveness & efficiency of your both cooling AND heating systems.
将顶层阁楼与下面的房子进行隔热，将门窗漏风处都堵好，如果这些措施得当，将会大大地提高空调制冷与制热系统的工作效率。
On the basis of successfully forming a chemically stable interface with the h'quid to be sealed, the life of sealing liquid is considerable extended by properly arranging…
在成功合成与被密封液体不相溶的磁流体的基础上，通过合理布置密封装置的磁场和磁路，可以大大延长磁流体用于旋转轴液体密封的寿命。
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