您要查找的是不是：
- titanium tantalum concentrate 钛钽精矿
- titanium niobium tantalum concentrate 钛铌钽砂
- It's too hot to concentrate on book. 热得不能集中心思看书。
- I must concentrate my energies on decorating today. 我今天必须集中精力搞装饰。
- I can't concentrate on my work when I'm tired. 我累了就无法集中精力工作。
- Don't put me off when I'm trying to concentrate. 我正要集中注意力呢，别打搅我。
- We must concentrate our attention on efficiency. 我们必须把注意力集中在效率上。
- She couldn't concentrate on a book very long. 她不能长时间专心读一本书。
- I must concentrate upon my work now. 我现在必须集中精力工作。
- Birds concentrate (in places) where food is abundant. 鸟聚集在食物丰盛的地方。
- A black mineral is an ore of niobium and tantalum. 一种黑色矿物是铌、钽矿石。
- Application: For tantalum sheet and wire etc. 用途:产品用于生产钽片,丝等加工材。
- She felt ill. She went to work, however, and tried to concentrate. 她病了。然而她照旧去上班，并且尽力集中精神工作。
- Containing or yielding titanium. 含钛的或产钛的
- Low price compared to tantalum capacitors. 与钽电容器相比价格更低。
- We must concentrate our efforts on improving education. 我们必须致力於改进教育工作。
- Platinum composite electrode was prepared that platinum was compounded on titanium,tantalum,and niobium substrates by proper technology. 铂复合电极是通过适当的工艺将铂复合在钛、钽、铌等基体上。
- I can't concentrate with you breathing down my neck. 你这样紧紧盯著我，使我精神无法集中。
- A racking headache made him unable to concentrate on his study. 折磨人的头痛使他不能全神贯注地学习。
- Shanghai Four-pole Titanium Industry Co., Ltd. 上海四极钛业有限责任公司。
