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- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
- An organic derivative, such as coal or petroleum. 有机衍生物一种有机衍生物，如煤或石油
- We must discuss the class activities in a body. 我们应该全体讨论班级活动。
- The ACFCMS monoliths consist of chopped pitch derived activated carbon fibers and pyrolytic carbon derived from phenolic resin binders. 着重考察了粘结剂的用量及活化工艺条件对产品吸附性能的影响;
- Children like outdoor activities. 孩子们喜欢户外活动。
- Don't look down on such activities. 不要小看这些活动。
- Father kept an account of his daily activities. 父亲把每天的活动都记录下来。
- Illness has curtailed her sporting activities. 她因病而减少了体育活动。
- Two methods, KOH activation and a combination KOH plus CO2 activation, were employed to prepare of corncob derived activated carbon with high surface area in this study. 摘要:本文以KOH活化法和KOH伴随CO2复合活化法两种方法，制备高表面积之玉米穗轴活性碳。
- Keep an account of your daily activities. 把你每天的活动都记下来。
- His activities were restricted by old age. 他的活动因年事已高而受到限制。
- They were suspected of underground activities. 他们被怀疑进行地下活动。
- These are unlawful business activities. 这些营业活动是非法的。
- We enjoy all pedestrian activities. 我们喜欢所有的步行活动。
- Father keeps a journal of his activities. 我父亲有记录每天活动的习惯。
- An acyl derivative of hydrazine. 酰肼一种由肼衍生而来的酰
- Activities involved in selling goods or services. 销售活动销售货物或服务的活动
- A mark used as a superscript to indicate the first derivative of a variable. 撇号置于右上角的符号，用以标明变量的第一个导数
- The derivative of the step is the impulse. 阶梯的导数就是脉冲。
- A derivative is defined by a limiting process. 导数是通过一个极限过程加以规定的。
