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- The four that are in red squares represent active chemical munitions bunkers. 这四个红方块代表活泼化学武器的掩体。
- Chlorine is very active chemically. 氯的化学特性很活泼.
- It also faces, in North Korea, the world's largest active chemical and biological armoury. 韩国同样要面对的，是朝鲜拥有的，世界上最大的现役生化部队。
- Asymmetric transformation becomes a more and more important branch in the preparation of optically active chemical compounds. 不对称转换是光学活性化合物制备中越来越重要的一个分支。
- Because of its active chemical properties,low ignition point and high combustion heat,mischmetal is fit for use as pyrophoric incendiary agents. 稀土金属燃烧剂可分为复合型和合金型两类，能自燃（或易于引燃），应用于弹药，使之具有穿甲（半穿甲）、爆破、杀伤、燃烧复合功能。
- Team A is made of carboxyl styrene, crylic acid assemble matter; Team B is made of silicate cement, quality quarts grit and special active chemical matter. 组分是由羧基苯乙烯、丙烯酸共聚物等组成；B组份是由硅酸盐水泥、精选的石英砂及特种活性化学物质等组成。
- Ajuga is a genus of Labiatae plants used widely as folk medicine in China, Indian, and Kenya, and the major active chemical constiuent is clerodane diterpenoid. 筋骨草属(Ajuga)植物是一类应用较广的药用唇形科植物,克罗烷二萜是其中的主要活性成分。
- For the researches and development of TCMs, the first challenge is to evaluate the efficacy, pharmacological properties, action mechanism and active chemical constituents. 研究和发展中药，第一个挑战是评估疗效、药理特性、作用机理和有效成分；
- The CIA also believes North Korea has "active chemical weapons and biological weapons programs," and may even have chemical and biological weapons at their disposal, Goss said. 戈斯说，中情局还认为朝鲜有“正在进行的化学和生物武器计划”，而且其武器库中也许已经有了化学和生物武器。
- Canada, Germany and Australia already allow restricted use of medicinalmarijuana or its active chemical, but the Dutch go a step further by providing the drug and regulating its quality. 加拿大,德国卡和澳大利亚已经允许有限制性的使用药用大麻,和一些有利的大麻化学成分。而荷兰则在提供药物和管理药物品质上先行了一步。
- C_5 fraction was compose of active olefins and dienes, of which dienes especially cyclopentadiene (CPD), isoprene(IP) and 1,3-pentadiene (PD) were valuable resources in chemical production because of their active chemical properties. 裂解C_5 主要是由化学性质活泼的烯烃和二烯烃组成,其中性质活泼含量较高的二烯烃,主要是环戊二烯(CPD)、异戊二烯(IP)和间戊二烯(PD),是化工综合利用的宝贵资源。
- Canada, Germany and Australia already allow restricted use of medicinal marijuana or its active chemical, but the Dutch go a step further by providing the drug and regulating its quality. 加拿大，德国卡和澳大利亚已经允许有限制性的使用药用大麻，和一些有利的大麻化学成分。而荷兰则在提供药物和管理药物品质上先行了一步。
- Astragalus membranaceus is a traditional Chinese medicine which was often used for tonifying-Qi.It contains multiple active chemical components including saponins, polysaccharides and flavones. 摘要黄耆是常用来补气的中药，本身含有多种有效活性成分包括黄耆多醣、黄耆皂甙、黄酮类等。
- A reactor is a container for chemical reaction. 反应器是进行化学反应的容器。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- Oxygen is one of the important elements in the physical world，which is very active chemically. 氧气是自然界中最重要的元素之一，它的化学性质非常活跃。
- We are doing a chemical experiment. 我们正在做化学实验。
- Photodynamic effect was a chance discovery early in the 1900s, demonstrating the lethal effects of light activated chemicals on living cells. 光动力效应所显示的光激活的化合物对活细胞的杀伤作用最早于20世纪初被偶然发现。
- My major is the subject of chemical engineering. 我的专业是化学工程学。
- Ammonia is a chemical substance. 氨是种化学物质。
