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The effect of grey humic acid is the weakest.
灰色胡敏酸影响最为微弱。
youdao
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The mix of humic acid with diffusion agent N have good effect too.
当采用扩散剂N时,与腐殖酸混合使用效果也较好。
youdao
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The mix of humic acid with diffusion agent N have good effect too.
当采用扩散剂N时,与腐殖酸混合使用效果也较好。
youdao