In the whole gas supply system, we should set up drainages at both ends to drain the water in the compressed air to insurance the compressed air dry.
在整个供气系统的始端应设置排水装置，并定期将压缩空气中的水分排尽，以保证压缩空气干燥。
2
But consumers' fears about price rises forced him to set aside the sale of electricity, gas and water companies.
但是消费者对于价格上扬的担忧迫使他将电力公司、石油公司及自来水公司的出售搁置一边。
3
Design of a complete set of anaerobic fermentation device. It contents an anaerobic reactor, a constant temperature system by circulating hot water, and a gas collection device.