... collar 凸缘；圈，环，套环，轴；卡圈；安装环 collar bolt 凸缘螺栓 combination 结合, 联合, 合并, 化合, 化合物 ...
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本发明提供在微通道反应器内安装环氧化催化剂的方法。
The invention provides a method of installing an epoxidation catalyst in a microchannel reactor.
它由公扣和母扣组成，公扣的外周设有安装环槽，公扣的一端设有凸出部；
The periphery of the male buckle is provided with an installing ring groove, and one end of the male buckle is provided with the bulge.
一个安装了投影仪的臂环直接将用户界面投射到了用户的手腕上。
An armband equipped with a projector displays a user interface directly onto the wrist of a user.
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