tracer ['treisə]

词性及解释

英英解释

1.

n.ammunition whose flight can be observed by a trail of smoke

[同]tracer bullet
2.

n.(radiology) any radioactive isotope introduced into the body to study metabolism or other biological processes
3.

n.an instrument used to make tracings
4.

n.an investigator who is employed to find missing persons or missing goods

常用词组

例句

1.

The slug of tracer is added to the stream In an undefIned manner
示踪剂液滴以不确定的方式注入流注里。
2.

Police with tracer dogs were fanning out over the Moor.
警察带着警犬在荒野呈扇形展开。
3.

A radioactive isotope of iodine widely used as a tracer in medical diagnosis.
放射性碘碘的一种放射性同位素，广泛地用于医学诊断作为追踪剂
4.

Radionuclide tracer analysis is a third important method
第三种重要方法是同位素示踪分析。
5.

The pore velocity is the velocity with which a tracer moves through a porous medium
孔隙速度是示踪元素穿过孔隙介质的速度。

小测验：选择正确的单词

n. 大片土地, 地带, 小册子

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