查询词典 darkening

The behavior of the tested silica glass, in which multiphoton absorption existed but no darkening occurred, was also described.

此外，对石英玻璃在飞秒激光作用下虽存在多光子吸收但并未产生光致暗化的原因作出了解释。

To be sure, most corporate executives express concern at the prospect of a darkening economic picture – and companies directly affected by the subprime meltdown and the decline in consumer confidence, notably banks and housebuilders, are already ensnared in their own mini-recessions.

杜布勒的这种喜悦表明，美国金融和经济领域的两批人看法截然不同：当谈及这个全球最大经济体的健康状况时，似乎经济学家们都是来自火星，而商界人士则都来自金星。

I also found that broad Balmer emission lines probably have gravtitational redshifts. I tried to explain in the context of binry black hole model the quasi-periodic optical darkening and brightening, the H_βdouble peaked profile, the gravitational redshift of H_βemission line,and the wiggling of jet.

我注意到宽发射线H_β有双峰结构，并对双峰结构尝试给出了合理的解释，我还注意到巴耳末宽发射线可能存在引力红移，并尝试在双黑洞模型下来解释准周期性光学变暗和爆发、H_β双峰结构、引力红移和喷流摆动。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。