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来源:雅诚德英语网
Typically, older leaves are affected first as the phosphorus is mobilized to young growing tissue.
通常,当磷元素向新生组织转移时,较老的叶片首先受到了影响。
Typically, older leaves are affected first as the phosphorus is mobilized to young growing tissue.
通常,当磷元素向新生组织转移时,较老的叶片首先受到了影响。