The motion tracking characteristics of steering Angle based wheel trailer system were studied. Two mechanism models which satisfy the definition of the steering Angle were present.

分析了基于牵引操舵角的轮式拖车系统的运动跟踪特性，提出了两种满足牵引操舵角概念的机构模型。

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Fully adjustable (preload, compression and rebound damping) piggyback rear shock with 4.7 "of travel delivers exceptional rear wheel tracking and stability."

完全可调(预载，压缩和回弹阻尼)4.7旅游“背驮式避震器提供了卓越的后轮跟踪与稳定。”

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When active crumbs are incorporated into asphalt mixture, Marshall test, wheel-tracking test and low-temperature split test are performed to evaluate the properties of them.

用马歇尔试验、车辙试验和低温劈裂试验分别比较了活化胶粉与未活化胶粉改性后的沥青混合料性能变化。

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Even though steering-wheel locks, satellite tracking and immobilisers had helped to reduce car thefts, trade in stolen parts remained a problem.

ECONOMIST: Monitor