“density of needles on a needle board”的概念、定义、翻译、参考文献-科学参考

单词	density of needles on a needle board
释义	density of needles on a needle board Encyclopedia 工学水刺法释 density of needles on a needle board植针密度在机台的宽度方向上，单位长度的针板上的刺针数。以枚/米表示。
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