plastic sleeve

基本解释

By modifying the unqualified PP, a kind of plastic sleeve for washer which quality is close to the foreign product is obtained.
本文还对大庆产聚丙烯不合格料进行了改性，并获得了质量接近于国外产品的瓶套。
NOTE: The valve is shipped in the closed position. The indicator on the plastic sleeve is aligned with the vertical scribed line on the stem.
注意：阀门装运时是处于关闭位置。塑料套筒上的指示器与阀杆上的垂直刻线对齐。
A distance sleeve in the main drive gear of LZ110 minicar has been improved by using a plastic sleeve instead of a rigid one, and it has been supported by test and calculation.
LZ110型汽车主传动器主动齿轮轴隔套改进设计时，采用了塑性套，并做了一些试验和计算。

"I have a plastic sleeve that holds 10 business cards, " she says, and she cuts oversize cards to make them fit.
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