通过非线性振动中常用的里兹-伽辽金法，推出了两端铰支压杆大挠度问题的一个新近似公式，计算结果表明具有较高的精度。
A new approximate formula for the large deflection problem of compression bar with two ends are simply supported is obtained, by the use of Ritz-Galerkin method.
进而提出采用平行杆模型模拟洞室围岩，以西南某深埋隧洞为例，推出了岩爆应力强度比判据分界点的统计损伤意义。
The statistical damage mechanical essence of the stress-strength ratio criterion is discovered on the base of the data from a SW deep lying tunnel.
去年，沃尔沃推出了一款设计，使驾驶员可以通过方向盘上特别设计的控制杆，激活和停用自动驾驶模式。
Last year, Volvo unveiled a design that will let drivers activate and deactivate the autonomous mode through specially-designed paddles on the steering wheel.
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