大学英语词汇短语释义解析及例句 active ingredient
释义：
active ingredient [化学] 有效成分；活性组分
例句：
What is the active ingredient in aspirin?
什么是阿司匹林中的有效成分？
The active ingredient in some of the mouthwashes was simply detergent.
某些漱口剂中的活性成分只是清洁剂而已。
A new hair-growing drug is being sold for three times the price, per milligram, as the drug's maker charges for another product with the same active ingredient.
一种新的毛发生长药物每毫克的售价是该价格的三倍，就如该药物的制造商对另一种含有同样活性成分的产品的售价一样。
What is an active ingredient?
什么是活性成分？
The active ingredient in Coke is phosphoric acid.
可乐中的活跃成份就是含磷的酸性物质。
What's the active ingredient in your sunscreen?
什么是活性成分在您的防晒霜？
The person is the most active ingredient in productivity.
人是生产力中最活跃的因素。
Can an inactive ingredient ever be considered an active ingredient?
一个非活性成分能被认为是一个活性成分吗？
Fortunately there are a wide array of inexpensive products that use this active ingredient.
幸运的是，现在有广泛的产品含有这一成分。
By 1897 a synthetic derivative acetyl salicylic acid of the plant's active ingredient was created.
1897年，这种植物中的有效成分的人工合成衍生物诞生了。
The safety and effectiveness of the active ingredient in this product have not been demonstrated to the FDA.
FDA法规事务代理副专员迈克尔 夏贝尔说：“该产品活性成分的安全性、有效性未向FDA提出。
The superficial epithelia cells do not bind the active ingredient and thus only serve as a transit area.
浅表的上皮细胞并不与活性药物成分结合，因而只是运输区。
By 1897 a synthetic derivative (acetyl salicylic acid) of the plant's active ingredient (salicin) was created.
到了1897年，一种取自柳树的活性成分柳醇(水杨苷)的衍生合成物——乙酰水杨酸诞生了。
Consumer Reports recommends repellents with DEET as the active ingredient as a way to avoid mosquito bites.
消费者报告推荐人们使用含有避蚊胺的驱蚊药，以有效避免蚊虫叮咬。
However, the side effects are said to be greater possibly because the active ingredient remains longer in the body.
然而，药物的副作用据说要更强一些，因为有用的成分在身体里面待得更久。
If you decide to try insect repellents, Consumer Reports recommends repellents with DEET as the active ingredient.
如果你决定用驱虫药，消费者报告推荐你使用包含有避蚊胺成分的驱蚊药。
The compounds that may coexist or have close related structures should be distinguished from the active ingredient.
应能与可能共存的物质或结构相似化合物区分。
New research reveals how nicotine, the active ingredient in cigarettes, works in the brain to suppress smokers' appetites.
最新的研究揭示了香烟中主要有效成分-尼古丁是如何作用于大脑，抑制吸烟者的食欲。
Resolution of the active ingredient from the excipients necessary to the preparation presents the same qualitative problem.
因制剂的所必需辅料而造成的活性成分的分解呈现出相同的定性问题。
For example, putting on a moisturizer before applying a sunscreen or a retinol cream can keep the active ingredient from soaking in.
举例来说，先擦保湿霜，然后再应用防晒霜或精纯维他命，这样可以防止活性成分渗入皮肤。
Because a new study suggests that humans can make their own salicylic acid, which forms the bulk of aspirin's active ingredient.
因为一项新的研究表明，人类可以自己生成水杨酸，水杨酸是构成阿司匹林的大量活性成分。