介绍了三种封头曲面与B型支承式支座钢管结合部分的展开放样计算法，该法可使支座钢管与封头曲面结合处达到良好的吻合，从而保证设备安装质量。
In this paper, three methods of lofting calculation of the steel tube in B-type supporting bearer are presented. With these methods, better fit between the vessel head and the tubes can be obtained.
液压卡盘和气动卡盘通过专用的加工工艺来制造，从而保证了数控设备的正常运行是不会出现质量问题。
Hydraulic and pneumatic chuck chuck is manufactured by special processing technology, so as to ensure the normal operation of CNC equipment is not a quality problem.
这可以让CouchApp在几种设备上运行，使其同步，从而可以自动进行增量复制，保证每种设备上都是最新数据。
This allows you to keep your CouchApp on several devices, and synchronize them, with automated incremental replication keeping your data up-to-date on each device.
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