A reasonable mechanical design of the main die body was given on the basis of considering every determining factors such as the bore hole condition (casing or not).
并根据井眼条件(有无套管)等方面因素，对打捞主体的机械结构进行了合理设计。
A mechanical seal and water seal combined floor drain consists of a floor drain cover, a main floor drain body, a float and a hose type magnetic seal valve.
一种机械密封与水封组合地漏，由地漏盖、地漏主体、浮子和软管式磁力密封阀组成。
The main reasons for IP failure were mechanical injury and foreign body scratch.
IP淘汰原因主要是机械划伤、异物擦伤。
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