英语翻译由于现场测量条件有限,很多尺寸是通过间接测量得到的,有的超过500mm的尺寸甚至使用的是卷尺.所以由自身测量带来的误差是很大的.但是对于关键尺寸,还是经过多次测量并确认的.

　　Limited by the actual conditions of measuring on the spot,a lot of measurements have been obtained through indirect measuring,some beyond 500mm are measured using a tape measure,so themeasurement ...