Cuprous acetylide takes the form of a russet or reddish-brown powder, insoluble in water and in the majority of organic solvents . 乙炔亚铜是黄褐色的红棕色的粉末，不溶于水和大多数有机溶剂。
The substitution of evacuated powders for high vacuum alone will usually improve the insulation by reducing the radiant heat transfer . 只需用抽空气体的粉末而不用单纯的高真空，一般便可减少辐射热传输，从而提高绝缘度。
Test methods for bulk density of fine ceramic powder 细陶瓷粉末的体密度测试方法
Specifications for powder metallurgy oil pump gears 粉末冶金机油泵齿轮.技术条件
Powder metallurgy . requirements for sintered bronzes 粉末冶金.对烧结青铜的要求
Appearance : yellowish powder or yellowish paste 外观：浅黄色粉末或浅黄色膏状物。
[ chuckles ] sift in a cup ofipowdered whale heart 往杯中撒用鲸鱼心脏做的粉末
It is an amorphous colorless or white powder 它是一种无定形的无色或白色粉末。
Specification for sherardized coatings on iron or steel 铁或钢件上粉末镀锌层规范
Alloy powder for welding . chemical analysis methods 喷焊合金粉末.化学成分分析方法
