种批是种子经营中具有一定数量，作为一个单位单独编号、取样、检验、验证的种子。《林木种子检验方法》（中华人民共和国国家标准，GB2772-81）规定，生产上具备下列条件在同一年采集的同一树种的种子可以称为一个种批。
上世纪七十年代以来，没有任何一种结核病治疗新药获批，这一状况一直持续到2005年。
As recently as 2005, no new class of drugs to treat TB had been approved since the 1970s.
薇琪·艾欧文在《女朋友指导》系列中诚实坦率的笔调给人一种清新、可靠的感觉，好像会激发一批新的作家的诞生。
Vicki Iovine's honest, frank prose in the Girlfriend's Guide series is refreshing, reassuring and seems to have inspired a whole new crop of writers.
给出了一种混凝土验收批强度标准差的无偏估计方法。
A new method for unbiased estimating standard deviation of strength of concrete of inspected lot is proposed in this paper.
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