immarcessible

immarcessible
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immarcessible (adj.)
"unfading, imperishable," 1540s, from Late Latin immarcessabilis from assimilated form of in- "not" (see in- (1)) + marcessare "to wither, pine away."
1. Immersible degrees in oil wells with low pump efficiency were adjusted by using the relation curves.
利用该关系图对泵效低下的油井沉没度进行调整,取得了较好的效果.

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