The length of the war is one of the biggest unknowns.战争要持续多久是最大的未知数之一。There are many unknowns in science.科学上还有许多未知之处.It was like a single equation with two unknowns.这挺像两个未知数组成了个简单方程....
Chloroprene Rubber ( CR ) is an important variety among the synthetic rubber.氯丁橡胶 ( CR ) 是合成橡胶的重要品种之一.In the chloroprene rubber can be used as acid acceptor.在氯丁橡胶中可作为酸的接受体.The chloroprene rubber sheath is heat and oil re...
The bones were "mislaid" during the seventeenth-century restorations.这些骨头在17世纪的修复工作中被“放错了位置”。The palace is closed during restorations / for restoration.宫殿于整修期间[因整修]停止开放.Composite resins are now widely used as filling mat...