如果有分析仪器的话，一直净化设备，直到残留气体的氧含量或者低于或者满足工艺规范的纯度级别。
If analytical equipment is available, purge system until oxygen content of residual gas is either less than or meets the process specification impurity level.
我最大的灵感来自于孩子们，我写每首歌曲，每一个舞蹈我，所有的诗歌是我写的所有灵感来自这一级别的无罪推定，即意识的纯度和孩子们说。
My greatest inspiration comes from kids, every song I write, every dance I do, all the poetry I write is all inspired from that level of innocence, that consciousness of purity and children have that.
西方大国担心，伊朗在试图将铀浓缩到武器级别纯度。专家说，武器级别的铀纯度大约在90%。
Western powers are concerned that Iran is seeking to enrich uranium to a purity high enough to make nuclear weapons, which experts say is around 90 percent.
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