您要查找的是不是：
- Pound notes have been withdrawn from circulation. 一英镑面值的钞票已停止流通。
- Brass is an alloy of copper and zinc. 黄铜是铜和锌的合金。
- Harvey discovered the circulation of the blood. 哈唯发现了血液循环。
- Brass is formed by the fusion of copper and zinc. 黄铜是由铜和锌熔合制成的。
- We observed the circulation of blood in frogs. 我们观察了青蛙的血液循环。
- The old coins have been withdrawn from circulation. 旧硬币已经收回不再流通了。
- Many forged notes are in circulation. 许多假钞在流通。
- This magazine has a large circulation. 这本杂志发行量很大。
- These ideas have been in circulation for some time. 这些想法已经流行了一段时间。
- An alloy composed of lead, tin, and zinc. 铅锡锌化合物由铅、锡和锌组成的一种合金
- Zinc circulation 锌循环
- You should first put a small piece of zinc plate into the cup. 首先，要向杯子里放一小片锌板。
- After a month in hospital, she is back in circulation. 住了一个月的医院后，她又重新活跃起来了。
- The fusion of copper and zinc makes the metal brass. 铜和锌的熔化制成黄铜。
- Police say a number of forged banknotes is in circulation. 警方称市面上有一定数量的伪钞。
- The newspaper's circulation has trebled since last year. 去年以来该报的发行量已增加到原来的三倍。
- I've been out of circulation in order to prepare for the TOEFL. 为了准备托福考试,我已经不从事社交活动。
- This paper has a circulation of more than a million. 这一报纸的发行量达一百多万份。
- An alloy of zinc and copper used as imitation gold. 铜锌合金作为仿金品使用的铜锌合金
- Grandpa has been out of circulation after the stroke. 在中风之後,祖父已经不再应酬。
