It is fairly easy to measure a friction coefficient by putting an object on an incline and by changing the angle of the incline, increasing it This is the angle alpha.

测量摩擦系数有一种简单方法,把物体放置在斜面上,然后不断增加斜面的倾斜度,这是角α

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It was indicated that enhancing the friction between the material and the rotary kiln wall is easy to carry out the rolling motion from the aspect of force moment.

本文从力矩的角度出发，得出了要实现物料的滚落状态，可以提高物料与窑壁间的摩擦系数，并提出了具体方法。

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L High mechanical strength, anti-friction and suitable for on-line back flush, easy to operate and low cost.

l机械强度高、耐磨、适宜在线反冲洗，操作方便，运行成本低。

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Barriers are easy to surmount, bureaucrats easy to foil, and friction is becoming fiction on the Internet.

FORBES: More Cheap Thoughts

And the absence of friction also makes it easy to tinker if a publisher wants to, say, rejigger a page in response to analytics.

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Facebook search might be effective, or sharing your vanity addresses or business cards, but this tool provides a really easy way to exchange contact information with multiple people with minimal friction.

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