石蕊: 从几种地衣类植物中获取的带色有机化合物的混合物.Litmus: Mixture of coloured organic compounds obtained from several species of lichens.例如石蕊和酚酞.Examples are litmus and phenolphthalein.它能改变指示剂的颜色,使石蕊和通用指示剂变蓝.It can change the color of the ind...
Immerse the plant ( in water ) for a few minutes.把那棵植物 ( 在水里 ) 浸泡几分钟.I immerse my clothes in the water.我把衣服浸在水里.Immerse the cloth in the dye for twenty minutes.把布浸在染料里20分钟.Don't immerse ourself in this infliction to...
铺网机是非织造布生产线的关键设备, 直接影响产品的质量.The lapping machine is the important equipment of nonwoven line, affects the quality of products.非织造布生产中使用的机械铺网机,在铺网过程中作往复运动,该运动是平动与转动复合的运动.Cross - Lapping Machine in nonwoven process makes re...
我打算用砂纸把椅子打磨光洁后重新上漆。I was going to sand down the chairs and repaint them.你要是把木器上的这些裂缝油上漆, 它们就不会那么难看了.If you paint over the cracks in the woodwork, they won't show so badly.这些无孔的表面很难以刷子上漆。These nonporous surfaces pain...
Sir Denis took one look and sent it back.丹尼斯爵士看了一眼就把它送了回去。Her husband was also honoured with his title 'Sir Denis'...她丈夫也被封为“丹尼斯爵士”。Denis tried to look nonchalant and uninterested.丹尼斯竭力表现出漠不关心、不感兴趣的样子。In Januar...