最接近的缸孔块有一个套筒到位，而其他外套筒显示块。
The closest cylinder hole in the block has a sleeve in place, while the other sleeve is displayed outside the block.
本实用新型公开了一种能够单手开、收的雨伞。它是由伞顶、伞柱、外套筒、伞骨、手握柄构成。
The utility model discloses an umbrella opened-and-closed by one hand, which is composed of an umbrella crown, an umbrella pillar, a cylinder, an umbrella stick and a hand grab handle.
介绍了采用双液复合离心铸造工艺浇铸以碳钢为外套、高铬铸铁为内套的双金属套筒的工艺试验情况。
Described in the article is the trial of the dual-liquid centrifugal casting process to produce clad tube with carbon steel as outer case and hi-chromium casting iron as inner case.
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