The usage of dummy have important function in vehicle security crash test, and that, the neck is the key part of dummy.

假人在汽车碰撞安全试验中有着重要的作用，而颈部是其关键的部位。

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The usage of dummy have important function in vehicle security crash test, and that, the neck is the key part of dummy.

假人在汽车碰撞安全试验中有着重要的作用，而颈部是其关键的部位。

youdao