She lit the oven, preparatory to putting the pie into it.她把烤箱加热，准备把馅饼放进去。Sloan cleared his throat preparatory to speaking.斯隆清了清嗓子，准备讲话。This was where we were to have our preparatory language courses.这就是我们要上语言预备课的地方....
At least a year's preparatory work will be necessary before building can start.在开始动工之前至少要做一年的准备工作。...preparatory talks for this week's summit in the Maldive Islands.为本周在马尔代夫群岛召开的峰会举行的预备会谈This was where we were ...
他轻轻松开油门杆，轮船开始缓缓前行。He gently opened the throttle, and the ship began to ease forward.伦纳德在温室里悠然自得地给西红柿绑上撑杆。Leonard pottered round the greenhouse, tying up canes for the tomatoes.压下挡杆，直到听到挡挂好。Press the lever until you hear ...
The main controlling factors of reservoir developing are lithology , lithofacies and ancient weathering crust karstification.储层发育的主要控制因素为岩性和岩相、古风化壳岩溶作用.And then studied the origin and lithofacies meaning of siderite.在此基础...
Non - modulating valves are also controlled and monitored by the control system.非 调节阀,也控制和监察控制系统.We study numerically the effect of signal modulating noise in bistable stochastic dynamical systems.用数值方法研究了双稳随机动力系统的信号调制噪声...