non-hermetic screw pump 非密闭式螺杆泵 ; 非严密封闭式螺杆泵
non hermetic 不密闭的 ; 不气密的
non-hermetic screw pump coupling 非密闭式螺杆泵联轴器
Seal of non-hermetic design 发明名称
hermetic and non-hermetic packaging 气密和非气密封装
Transistors are available in a variety of hermetic and non-hermetic packages including balanced configurations.
晶体管可在一个密封和非密封包装，包括多种配置的平衡。
A new type of high pressure hermetic sealing structure suitable for the situation of non-easydisassembling to change seals is instucted.
介绍了一种适用于不易拆装更换密封的场合下的新型高压密封结构。
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