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(1) Impermeability: refers to the performance of commercial concrete against the penetration of liquids and gases. Because there are interconnected pores and capillaries in the commercial concrete,...
The "number of poles" of a three-phase asynchronous motor refers to the number of poles of the excitation winding on the motor. How to classify it specifically, what is the difference between...
When you lift a construction site and piling it, most people will think of the huge bangs and vibrations that occur when the air hammer falls. The reporter recently saw a new type of pile driver in...
On November 23, 2010, the 5th China International Construction Machinery, Building Materials Machinery, Engineering Vehicles and Equipment Expo (baumaChina2010) will be grandly opened at Shanghai New...
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.