On the basis of analyzing traction property of anchor chain of the shearer operated by outside power, the kinetic model is simplified as spring_mass system with mass.

在分析了外设动力式采煤机锚链牵引特性的基础上，将其动力学模型简化为具有质量的弹簧—质量系统。

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But new competitors will help the technology gain traction in the mass market, he said.

但他也认为新的竞争者将促使大众市场更加关注这项技术。

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A traction measurement system for urban mass transit vehicle based on the integrative virtual instrument technology is presented.

介绍一种应用于城市轨道交通车辆的牵引测试系统中的基于虚拟仪器技术的一体化测试的解决方案。

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Finally, with most early tablet adopters opting for Wi-Fi-only models, we see little hope that cellular data will have better traction as penetration continues toward mass markets.

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While traction batteries are heavy, and mass is bad for acceleration and agility, the lower center-of-gravity often compensates with higher levels of cornering, especially when a car wears rubber like the Signature Performance edition's sticky 21-inch summer tires.

WSJ: 2012 Tesla Model S Signature Performance Review: I Am Silent, Hear Me Roar | Rumble Seat by Dan Neil

Third, we believe in economics of increasing returns for mobile ecosystems and judge rather unlikely that Windows can gain critical mass against Android and iOS. Fourth, we have seen evidences of lack of traction for the Windows operating system over the last 12 months and challenge the idea that the Nokia brand can make a meaningful difference today.

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