Earlier this month, Microsoft exposed the details of 3D gestures and

Abstract In the 1990s, private en

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China has been producing and applying plastic pipes for nearly 40 years, but i

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The author learned from the Provincial Science and Technology Departm

The lubricant inside the lubrication bearing can be roughly divided into oil and grease. Repair

To have sufficient pre-tightening force, the tightening mechanism of the bolt can be obtai

Abstract The Company and all memb

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