emit 四级六级考研GRE

It is unlawful for factories to emit black smoke into the air.

现在, 空气中排黑烟是违法的。

She was heard to emit a cry of horror.

人们听到她发出恐怖的叫声。

Clockless chips also have the added benefit of emitting for less radio interference.

无时钟的芯片还有一个额外的优点，即辐射更少的射频扰。

Geysers emit water.

间歇泉喷出水来。

The sun emits light.

太阳发光。

The mantid ear -- a single slit -- is sensitive to the ultrasonic "pings" emitted by hunting bats.

螳螂的耳朵只有一条裂缝，对于蝙蝠发出的超声波非常敏感。

The silicon light emitting device also can be used as a photoreceiver under reverse bias, receiving the light emitted from the other one.

此发光元件在反偏当成光接收元件，接收来自同结构顺偏元件所发出的光。

The aequorin instantly emits light when triggered by calcium ions -- a substance that is produced when the bioagent-induced cascade occurs in the B cell.

一旦被钙离子——生物介质在B细胞内引发崩溃后所产生的物质——诱发，发光蛋白质立即产生光亮。

The paper reports a method and a spectropolarimeter for determining the polarization state of an emitted or reflected light in terms of its Stokes parameters.

给出了通过测量斯托克斯参量,进而确定光全偏振态的一种方法。

It also emits natural phytocide to keep air fresh, and keep people's mind clear, and emit the far infrared ray to improve the blood circulation to relieve the fatigue.

同时其释放的远红外线能促进人体的血液循环，消除疲劳。

In a testing of petrolic engine, about 70% to 80% of nonmethane hydrocarbon is emitted into atmosphere without catalysis conversion in theoment of coldstart, so that serious pollution is produced.

在汽油机的一个测试循环中,约占排放污染物总量70%～80%的非甲烷碳氢化合物是在汽油机冷起动阶段没有经催化转化而直接排入大气中,造成严重污染。