“首现点”的概念、定义、翻译、参考文献-科学参考

单词	首现点
释义	首现点 Encyclopedia 理学生物地层带释 first appearance datum首现点某一化石分类单元在地层中出现的第一个层位（薄层）。是生物面的一种。又称首现基准面。
随便看	can-can cancel an order cancellability cancellable element cancellation cancellation amplifier cancellation group cancellation groupoid cancellation law cancellation law for addition cancellation law for multiplication cancellation of collection registration cancellation of handles cancellation of negotiable instrument cancellation of singularities cancellation point cancellation property cancellation semigroup cancellation subsemigroup cancellation theorem cancellation theory canceller cancelling cancelling denominator Cancer

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