darkening ring

用法例句

Effects of shading at different filling stages on nitrogen accumulation and translocation in wheat at different nitrogen rates;

不同施氮量下子粒灌浆不同阶段遮光对小麦氮素积累和转移的影响

Effects of Shading on Capsaicin and Relevant Enzymes of Fruit in Pepper;

遮光对辣椒果实中辣椒素及其相关酶的影响

Effects of shading on nitrogen and carbon metabolism of broccoli;

遮光处理对青花菜体内碳、氮代谢的影响

NB-UVB damage to keratinocytes and protective efficacy of sunscreen in rat;

窄波UVB对大鼠表皮的损伤及遮光剂保护作用的研究

Usual suggestions about sun protection methods were provided to all the subjects at their visits and all the subjects could voluntarily charge of free broad-spectrum sunscreen(SPF30+,PA+++) in the whole study year.

所有患者均接受与以往一样常规的治疗(包括(简单的)门诊告知注意避光,建议使用广谱遮光剂)及按自愿原则可免费索取全年使用的广谱遮光剂。

cut-off [lighting facility]

遮光式〔照明设施〕

The lens hood is used to cover up the lens.

遮光罩是用来遮盖镜头的。

To cover(a part of a photographic film)by the application of an opaque border.

用遮光框遮住（胶片的一部分）

Remove sunvisor from vehicle.

从车辆上拆去遮光板。

anti-dazzle glass

防眩玻璃，遮光玻璃

lens hood for cinematographic cameras

电影摄影机透镜遮光罩

opacifiers for enamel or glass

搪瓷或玻璃用遮光剂

a window shade that rolls up out of the way.

能够卷在一边的遮光帘。

Program design of outer baffle vanes and improvement of conical inner baffle in R-C system

R-C系统外遮光罩挡光环的程序化设计及锥状内遮光罩的改进

A screening against light or heat.

遮蔽光或热的遮挡物

Parasols are used as a protection against the sun.

阳伞是用来遮挡阳光的。

Wear a hat to protect yourself from the sun.

戴上太阳帽以遮挡阳光。

If light could be kept out from where you are so that there would be no light for the book to reflect,

如果射向你的光被遮

screen(a lamp,light,etc)to reduce its brightness

遮挡（灯、光等）以减弱亮度

He drew the curtain to keep the sun off.

他拉上窗帘遮住阳光。

That wall blocks out all the light.

那堵墙把光线都遮住了。

The haze once more screened the moonlignt.

雾霭又遮住了月光。

draw the curtains to shut out/let in the sun

拉窗帘遮蔽[放进]阳光