For the purpose of studying the vibration characteristics of high-rise structure under high wind speed, a model of single-rodtransmission tower was tested in wind tunnel.
为了研究高耸结构在强风作用下的振动特性，本文对一自立式单杆输电塔进行了风洞试验研究。
2
The company was founded in 1985, is rolling rod drive principle of the development and fabrication of linear transmission automation.
公司创建于1985年，是以滚动式光杆驱动原理开发制造了自动化线性传动装置。
3
The hoisting jack calls the mechanical hoisting jack, is by the manpower through the screw vice-transmission, the screw rod or the nut sleeve achievement goes against lifts.