该腔室有一个很纤细的偏心气缸，它可以旋转以使唤得下部或者上部狭槽的气流更强。
This chamber contains a slightly eccentric cylinder which can be rotated to make either the upper or the lower slots bigger.
本文介绍了斜楔式和偏心式两种新型内孔挖槽刀具的结构和原理。
The structure and principle of two new types of cutting tools (bevel wedge type and eccentric type) for boring O-ring grooves have been introduced in this paper.
采用偏心侧浇道浇注系统，在金属液的末端均匀开设集渣包及排气槽。
Slag strap and exhaust slot are designed in the end part of molten metal, and off-centering runner can be used.
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