粉末照相术的英文：
powder photography

powder是什么意思：
n. 粉末，粉状物质；美容粉，扑面粉；火药
v. 抹粉；（使）成粉末

The medicine is requested to pestle into powder.
这种药要研成粉末服用。

black powder train
黑药导火线

Borax is a kind of white powder.
硼砂是一种白色粉末。

The smell of powder was in the air.
空气里有股火药味儿。

rouge powder | blush
胭脂| 修容饼

photography是什么意思：
n. 摄影

He took to photography.
他开始喜欢上摄影。

Photography and video are not permitted inside the building
楼内不许拍照录像

Photography is used to produce a plate for printing.
用摄影术为印刷品制作印版。

It leads to the dramatic advances in astronomical photography.
天文摄影术得到巨大发展。

There was some marvellous wildlife photography in the documentary.
这部记录片里有些绝妙的野生动物镜头。