By the carbonification degree in the concentrated sulphuric acid, the mineral wax, such as paraffin wax added can be determined.
根据蜂中在浓硫酸中可炭化，加入石物不炭化来测定此掺杂物。
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Defects, but you can intentionally replace a silicon atom with, say, a phosphorus atom, and then you can change the number of free electrons that are in a region of space that has that excess of what are called dopants.
缺陷， 但你可以有意用磷原替换硅原，然后你可以改变该区中自由数量， 个区有多所谓掺杂物。
The FDA regulates supplements for adulterants and to make sure that you're actually getting what you're supposedly paying for.
美国食品药品监督管理局（FDA）对补充剂进行监管，以确保其不含掺杂物，并保证消费者实际获得所支付产品。
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划词翻译
详细解释
中
在浓硫酸中可
炭化，加入
物
替换硅原
中自由
数量， 
个区
多
