“tracer”的概念、定义、翻译、参考文献-科学参考

单词	tracer
释义	tracer [`trā·sǝr] ^CHEMISTRY A foreign substance, usually radioactive, that is mixed with or attached to a given substance so the distribution or location of the latter can later be determined; used to trace chemical behavior of a natural element in an organism. Also known as tracer element. ^ENGINEERING A thread of contrasting color woven into the insulation of a wire for identification purposes.
随便看	four-vector four-vector potential four-velocity four-way dip four-way reinforcing four-way switch four-way valve four-wheel drive four-wire circuit four-wire line four-wire repeater four-wire subscriber line four-wire terminating set fovea fovea centralis foveal vision foveola foveolate fowan fowl Fowler-DuBridge theory Fowler function fowlerite fowl pox ottoman

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