What you can do is try to maintain nitrogen balance.

你能做的就是尽量保持氮平衡.

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There was positive nitrogen - balance in the groups except the N - free diet group.

除无氮饲料组为负氮平衡,其余三组均为正氮平衡.

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Heat production , energy and nitrogen balance were evaluated in respiration double chamber ( BAU KB - 1 ).

连续7天持续灌注后用农大KB -1 型呼吸测热室测定 产热 和能氮平衡.

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EVALUATION OF RICE PROTEIN FORTIFIED WITH AMINO ACIDS BY NITROGEN BALANCE INDEX ( NBI ).

某些有机磷农药与辐射大米的Ames试验.

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