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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The shape changes of cortical cell of yak hair fiber have been analyzed before and after stretching slenderization by means of ultrasonic separation.

借助超声分离技术，对细化前后牦牛纤维皮质细胞形态的变化进行分析，发现纤维皮质细胞被拉长变细且不发生细胞间的滑移。

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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