It can emit a clear red light, and has small body with easy adjusted and set up and also safe stability.
能产生一条清晰明亮的红线、体积小巧、方便调节、易于安装、稳定可靠。
The safe stability coefficient only decreased a little when taking into account geometrical nonlinearity.
几何非线性对主拱结构稳定性能的影响不大;
At the same time, double compound layer which was composed of metal transition layer with high hardness and ceramic layer improved the service life and safe stability of the composite pipes greatly.
同时,高硬度的金属过渡层与陶瓷层组成的双层复合结构使复合管的使用寿命和安全稳定性显著提高。
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