它们的背部是军舰的灰色，最上方是呈锯齿状的黄色背鳍。
Their backs were battleship gray topped with a saw-toothed line of small yellow dorsal fins.
结果发现随碳含量增加，熔合区中的类马氏体层消失，呈锯齿状的部分熔合区增宽。
It was found that with the increasing of carbon content, the martensite layer the weld bond disappeared, and the sawtooth-like of the partially melted zone widened.
造成此段呈锯齿状的原因同样是因为 GC 和应用程序交错执行以便保持低暂停时间。
The sawtooth nature of this section is again because of the interleaving of the GC and application to preserve low pause times.
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