易混淆的单词： Tracer

Overhead , red tracer bullets darted into a black sky .

头顶，红色的曳光弹飞向漆黑的夜空。

A tracer aided study on silicon chemistry in biological systems .

在生物系统中对硅化学物质的示踪辅助研究。

Breakthrough curves of tracer particle in models with different depths and widths .

不同槽宽和槽深模型的示踪质点穿透曲线。

The tracer is distributed in a nearly normal fashion .

示踪剂的分布接近正态分布的样式。

They used a tracer gas to measure warm air infiltration .

他们用追踪气体来衡量热空气的渗入。