The state trajectory of system is chattering, which restrict it's actual applications. In the circumstances, the arrival condition and the existence condition have been changed .

同时，在离散的情况下，滑动模态的性质、存在条件及其到达条件都己经改变，因此研究离散系统变结构控制方法对降低抖振具有重要的理论价值和实际意义。

youdao

It would also continuously monitor and record the casualty's condition before the arrival of emergency services.

并且这套系统在急救车到来之前可以持续监测和记录伤者的健康. .。

youdao

Please ship the goods in strong packing to ensure good condition on arrival.

运输货物时，请用最牢固的盒子包装，以确保货物到达时完好无损。

youdao

After intervention of the police and the arrival of an ambulance, he was in critical condition and transported to a hospital.

CNN: Dutch teens charged in linesman's death

After her arrival at Lukyanivska prison, she suffered back problems leading Ukraine's human rights envoy to describe her condition as "extremely serious".

BBC: Yulia Tymoshenko, file pic from January 2010