mm coil 中文意思是什麼
mm coil
解釋
船中主繞組-
Piston rings up to 200 mm diameter for reciprocating internal combustion engines - designs, dimensions and designations for multi - piece oil control rings - specification for coil - spring - loaded oil control rings
往復式內燃機直徑小於等於200mm的活塞環.第8部分:多片組合式控油環設計尺寸和命名.第1節:盤簧加壓控油環規范
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