The length of the irregular tips depends on the rate of the shape changes.

形状变化的速率决定了不规则尖端的长度。

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Its shape changes from small nodule in the early stage to erosive ulcer in the later.

病变早期为小结节状，晚期形成侵蚀性溃疡，病程缓慢，很少转移。

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Zero-crossing detector is capable of predicting the shape changes of power spectrum so as to find the newly emerged moving sound sources in ambient noise.

过零检测器可以通过预报功率谱形状的变化来发现环境噪声中新出现的运动声源，研究了过零检测器的检测性能。

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Another breakthrough from GM is a device that uses a material called shape memory alloy (SMA), which changes shape when it is heated.

FORBES: GM: The Big Green Patent Machine

In other green transportation news, Cannondale unveiled a chainless concept bike that can changes shape as you ride it.

ENGADGET: Inhabitat's Week in Green: GPS shoes, shape-shifting bicycle and a wheelchair helicopter

This changes the shape of the foot and can cause swelling, tenderness and pain.

BBC: Bunions - family not footwear to blame