plane datum points 平面基准点
auxiliary datum plane 辅助基准面
erection datum plane 安装基准面
tidal datum plane [海洋] 潮汐基准面
datum plane for sounding 基准水平面
datum plane for construction 施工基准面
floating auxiliary datum plane 浮动辅助基准面
standard datum plane 标准基准面
With the idea of the datum plane linking the two shops at a higher level, the shops are actually conceived as separate and independent entities on the ground.
基准面在更高的层层连接这两个商店的概念，而在地上作为单独的实体商店。
Currently available vernier depth gauges are simple in measuring function, especially in measuring precisely the no touchable directly depth of the measuring datum plane.
现有游标深度尺的功能单一，对测量基准面无法直接触碰的深度尺寸难以精确测量。
In order to improve the manufacturing technology of rotary milling jigs, a datum plane was added so as to raise the manufacturing precision and reliability.
原回转铣夹具制造精度较低，现在增加一处工艺基准面，大大提高了它的制造精度和可靠性，并为夹具的使用提供了一处校对基准面，使得叶片型面铣加工更为可靠。
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