tube pass meaning in Chinese

管程

Londoners will soon be offered a credit card that doubles as a tube pass and a “ wave and pay ” purse
伦敦人即将拥有一种新型信用卡，它具有电子地铁卡及“挥即付”钱包的双重功能。
As ammonia built up in the water gas purification system reacts with a part of condensate on the inner wall of the heat exchanger tube passes , and the salt solution formed cools down and crystallizes in the tube passes , the resistance in the shift conversion section increases exceedingly
摘要由于水煤气净化系统积累的氨与部分冷凝水在换热器管程内壁反应形成的盐溶液在管程内冷却结晶，造成变换工序阻力异常增大。