in use

例句与用法

One of the most dangerous illegal narcotics in use today is opium .
目前最危险的违禁麻醉品之一是鸦片。
The kiln had been in use for some time and was not in good condition .
该窑使用过一段时间，情况并不好。
Dehydration in hydraulic presses is the most general method now in use .
在水压机中驱水是目前通用的方法。
Physical insight is valuable in using the finite element method .
在利用有限方法时，物理上的观点是有价值的。
Today, thousands of systems are in use primarily on economic payoff .
目前，很多系统的采用主要是为了经济收益。
But it is still the major cause of slowness in using operation research .
然而，这仍是作业研究应用缓慢的主要原因。
About half of the world's known supply of copper ore is already in use .
全世界已知的铜矿储量，大约有一半已在使用了。
In north america more than 70 different railway times were in use up to 1882 .
到1882年为止，北美使用过70多种铁路时间。
Methods of stocktaking vary according to the kind of stock records in use .
盘点的方法根据使用的库存纪录的种类不同而异。
It proved to be one of the mathematical instruments that were then in use among seamen .
这原来是当年海员们用的一种计算工具。