Overcome the compressed air pulse soot cleaning of ills.

克服了压缩空气脉冲清灰的作弊病。

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At present, the sonic soot cleaning is an approximately "green" boiler soot cleaning way, and the products are newly emerging things in the family of soot cleaning.

声波除灰是目前锅炉运行中近乎“绿色”的除灰方式，是除友家族的新生代。

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The main component of the system, the exhaust fan, can not be polluted by the soot, needs no cleaning, and has the advantages of simple maintenance, long service life and good soot separating effect.

系统中主要部件排风机将不会受到油污的污染，且不需清洗，具有维护简单，使用寿命长和油烟分离效果高的优点。

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Users of these early firearms had to deal with soot clogging their barrels, and may have eventually discovered that if they cut curved grooves in the gunk while cleaning, it would impart a spin on the projectile, making it more accurate.

FORBES: No. 7 The Rifle