The trains and subways in Tokyo serve thousands of commuters everday.东京的火车和地铁每天都接送成千上万的人上下班.Subways are really crowded at rush hour.高峰时刻,地铁一定很拥挤吧.The city subways carry hundreds of thousands of passengers a day.市内的地下铁每天运...
Enriched uranium is a key component of a nuclear weapon.浓缩铀是核武器的关键组成部分。Membrane electrode assembly ( MEA ) is the key component of DMFC.膜电极 ( MEA ) 是直接甲醇燃料电池(DMFC)的核心部件.Balance ram is a key component of a two - leg shiel...
Freon exists both in liquid and gaseous states.氟利昂有液态和气态两种形态。Ref. Freon piping to be done air - tightness test and vacuum test.冷藏氟利昂管系密性试验和真空试验.It adopts Freon to refrigeration. It is safe and reliable.采用氟里昂制冷, 安全可靠,温度自动...