Field measuration and printout of lift parameter with DT 98 A lift acceleration intelligent measuring instrument.本文利用DT98A电梯加速度智能测试仪实现电梯性能参数的现场测量,并现场随机绘图打印测量结果.Fig 2 . Open - window envelopes, showing receivers'name...
除非是直接被击中，否则这个地下掩体是非常安全的。The dug-outs were secure from everything but a direct hit.我从未有过如此安全的感觉。I couldn't remember ever having felt so safe and secure.人们必须确信这种治疗方法是安全的。People must be satisfied that the treatment is ...