This study aims at investigating the lock-in phenomenon, fluctuating lift and the phase shift between fluctuating lift and displacement of the oscillating cylinder.
文章重点研究了较高振幅振动柱的锁定现象、波动升力与柱位移之间的相位变化，讨论了方柱涡激振荡、驰振和气动稳定性问题。
Safety features including: identifying trees, rocks and obstacles, sensor equipped bumpers, mower lift detection and child lock.
安全装置有：识别树枝、石头、障碍物； 具有缓冲特征的传感器；割草机升降装置以及儿童锁。
Safety legs and lift lock out pins.
安全的木头支架和升降式的止动销。
Controlling room: it is made up of the optional push button, the sudden switch, the alarm bell push button and the electric lock, controlling up, down and stop of the lift car;
操纵厢：由层楼选择按钮、急停开关、警铃按钮、电气锁组成；控制轿厢的上行、下行和停止。
This auto lift has breaking rope safety device, main safety location device and hydraulic lock, All these things guarantee safe and stable operation.
本机设有断绳保险机构和主保险定位机构及液压锁，保证使用安全，平衡可靠。
This auto lift has breaking rope safety device, main safety location device and hydraulic lock, All these things guarantee safe and stable operation.
本机设有断绳保险机构和主保险定位机构及液压锁，保证使用安全，平衡可靠。
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