packless

基本解释

• adj.无包装的；未加封的；未填实的；疏松的

同根派生

英汉例句

• Only valves such as packless diaphragm or bellows type should be used.
  只能使用无衬垫膈膜阀或波纹管阀。
• The spring packless design incorporates a spring loaded packing chamber which utilizes two heavy duty packing rings.
  弹簧无垫圈设计结构将采用两个重型垫圈的弹簧加压垫圈腔一体化。
• Series 65 spring packless radiator supply valves are used on all heating and cooling equipment where manual control is desired.
  系列65弹簧无垫圈散热器供水阀适用于需要人工控制的所有加热或冷却设备上。
• Advantages for improving use ratio of circulating water of modern packless spray cooling tower be suitable for northwest area and its transforms were put forward.
  介绍了循环水冷却原理,提出适于我国西北地区的新型无填料喷雾冷却塔提高循环水利用率的优势及改造方案。
• Packless design eliminates stuffing box friction
  无填料结构,避免填料函的摩擦