non-sealed bearing 非密封轴承
non-sealed switch device 非封闭开关设备
Non-sealed Steel Tube Confined Concrete 不封口钢管混凝土
non-contact sealed ball bearing 非接触式密封球轴承
Durable non-sealed waterproof leather upper.
耐用的非密封防水皮革鞋面。
The valve is plate welding, structural short, light weight, simple structure and easy to maintain and use, it's a non-sealed type valve.
本阀门为钢板焊接，结构短，重量轻，结构简单，使用维修方便，为非密封型阀门。
This series of pumps can be applied to convey flammable, explosive, toxic mediums without solid particles and mediums requiring non-leakage and non-sealed-pollution.
该系列泵适宜于输送不含固体颗粒的易燃、易爆、有毒的介质和其它要求无泄漏及不允许密封污染的介质。
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