不但流动阻力较小，而且密封性好。
The utility model has the advantages of small flow resistance, and good sealability.
具有密封性好，动力消耗低。
With the advantage of good sealing and low power consumption.
新结构形式特点：密封性好，方便维修。
New structure type is featured by fine sealing performance and easy maintenance.
具有使用方便，安全且密封性好的优点。
The invention has the advantages of convenient use, safety and good sealing performance.
密封性好，防水，防潮，可以延长产品寿命。
Good seal, water proof, moistureproof, can prolong the life of goods.
我们所有的木箱密封性好，它们不易受潮腐蚀。
All our wooden cases are well sealed. They are not easily subject to sweat damage.
密封性好，对作业环境无污染，操作方便，噪音低。
Good seal, no pollution of the environment, easy operation and low noise.
其结构简单可靠，运行平稳，具有密封性好、无污染。
Its structure is simple, reliable, stable operation, with good sealing, no pollution.
刀锋式闸板设计，关闭时由斜面施力于阀座，密封性好；
具有强度高，重量轻，密封性好，产品使用寿命长等优点。
With high strength, light weight, good seal, the advantages of long life products.
其产品具有密封性及防水性能好的特点。
其产品具有密封性及防水性能好的特点。
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