Pneumatic trough

A pneumatic trough is a piece of laboratory apparatus used for collecting gases, such as hydrogen, oxygen, and nitrogen. Pneumatic troughs require a liquid such as water. Scientists also have used mercury in pneumatic troughs, but usually only for the collection of water-soluble gases. Health-and-safety issues surrounding mercury generally prohibit its use in modern-day pneumatic troughs.

单词	Pneumatic trough
释义	Pneumatic trough 英语百科 Pneumatic trough A pneumatic trough is a piece of laboratory apparatus used for collecting gases, such as hydrogen, oxygen, and nitrogen. Pneumatic troughs require a liquid such as water. Scientists also have used mercury in pneumatic troughs, but usually only for the collection of water-soluble gases. Health-and-safety issues surrounding mercury generally prohibit its use in modern-day pneumatic troughs.
随便看	Khīnzir, Jab. Khīrgi Khīyāv Khūghaz Khūgīanī Sānī Khūnjerāb R. Khūnīk Bālā Khūr Khūran Str. Khūrāb Khūshāvar Khūzestān Khǔjand Khǔrsovo ki Ki. K.I .ki ki 1 Ki 10 ki 11 ki 12 ki 13 ki 14 ki 15