911查询·英语单词
1. The design of the sideway track box plate girder of the double beam shop traveller is described. 本文介绍20吨葫芦双桥梁式起重机及其偏轨箱形梁的设计计算。
2. Design of the Sideway Track Box Plate Girder of the Double Beam Shop Traveller 葫芦双梁桥式起重机偏轨箱形梁的设计计算