The bridge across the track or on the shelf, the best frame is bearing surface of leg link on the standard level measured at both ends of the bearing surface on the trolley track.
将桥架横放在轨道上或架子上，最好架在于支腿链接用的支承面上，用水平仪测出两端支承面上边的小车轨道的水平标准。
Representative nose width, 135 representatives of leg-length, 28 representatives of the lens height, the buyer can make reference to this data to select their own eyes Frame!
代表鼻梁间宽度，135代表镜腿长度，28代表镜片高度，买家可以参考这个数据来挑选适合自己的眼镜架！
The problem of the effect of oblique tension link on the derricks' cross section frame in the front leg stability calculation of open front derricks remains unsolved.
在前开口井架前大腿的稳定计算理论中一直没有很好的解决井架横截面框架中斜拉杆的作用。
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