The friction and wear properties of silicon nitride (Si_3N_4) under dry sliding, water and ethanol lubricating conditions were investigated using a reciprocating pin-on-block tester.
在往复试验机上考察了Si_3N_4在干摩,水和乙醇润滑条件下的摩擦磨损性能,用SEM,XRD和XPS研究了Si_3N_4在水和醇中的摩擦化学反应机理。
carbon-dioxide-water fire extinguisher
二氧化碳-水灭火器
sprinkler water accelerator
喷水灭火系统水加速器
water type (stored pressure) extinguisher
水剂（贮压式）灭火器
sprinkler connection
喷水灭火系统增压器
water type (gas pressure) extinguisher
水剂（气压式）灭火器
He had the intelligence to put the fire out with a fire extinguisher.
他机灵地用灭火器灭火。
Extinguishing media: Water spray, foam dry chemical or carbon dioxide.
熄灭媒质：喷水，泡沫，干粉灭火器及其二氧化碳。
water display [fireboat]
洒水表演〔灭火轮〕
Primary Research on Application of Water Spray Extinguishing System for Large-Scale Oil-Immersed Transformer
水喷雾灭火系统在大型油浸变压器的应用
Application of water-mist projector fire-extinguishing system in the large oil-immersed transformers
水喷雾灭火系统在大型油浸变压器中的应用
sprinkler drain valve
喷水灭火装置排水阀
Use foam, water, CO2 or dry powder for small fires.
使用泡沫、水性、二氧化碳或干粉（灭火器）处置小型火情。
Lee stood by with a fire extinguisher while the trash was burning.
当废物堆着火时，李拿了灭火器准备灭火。
gas cartridge operated fire extinguisher
贮气瓶式灭火器筒体内
monochloromonobromomethane type extinguisher
一氯一溴甲烷灭火器
cartridge-operated dry chemical fire extinguisher
贮气瓶式干粉灭火器
foam type (stored pressure) extinguisher
泡沫（贮压式）灭火器
Fetch the fire extinguisher at once.
立刻去拿灭火器来。
