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- It is necessary to enrich the fuel by increasing the percentage concentration of uranium-235. 必须提高铀235浓度的百分比，使燃料浓集。
- A method of verifying the formula of index of refraction of a solution is given by measuring its index of refraction and percentage concentration with Abbe refractometer. 给出了通过阿贝折射仪测溶液折射率和百分比浓度来验证其折射率公式的一种方法
- What percentage of the earth is covered by oceans? 地球上百分之多少被海水覆盖着？
- The figure is expressed as a percentage. 那数字是以百分比表示的。
- We have only a small percentage of foreign books. 我们只有一少部分外文书。
- What percentage of children were absent? 缺席的学童占百分之几?
- Each of them got a percentage of the profits. 他们每个人都得到一部分利润。
- Whisky contains a large percentage of alcohol. 威士忌所含酒精的百分比很高。
- His area of concentration is nuclear physics. 他的专门研究范围是原子物理学。
- There is no percentage in worrying about it. 为此担忧无济於事。
- There is no percentage in arguing with him. 同他争论于事无补。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- There is a concentration of people in big cities. 大城市人口集中。
- What percentage of his income is taxable? 他的收入有多少需纳所得税?
- He seized every chance to break out of the Nazi concentration camp. 他抓住一切机会从纳粹集中营跑出来。
- A state of mental concentration. 专心致志，全神贯注全神贯注的状态
- Exceptionally great concentration, power, or force. 特别强烈的程度，力量或动力
- The POWs burst out from(of) that Nazi concentration camp one night. 一天夜里战俘们冲出了那个纳粹集中营。
- 8.A method of verifying the formula of index of refraction of a solution is given by measuring its index of refraction and percentage concentration with Abbe refractometer. 以实验为基础，找出了导致大气竖直折光的主要因素，给出了大气竖直折射角计算的实用公式。
- Stress and tiredness often result in a lack of concentration. 紧张和疲劳常使人精神不集中。
