不但会堵塞石材呼吸的毛细孔，还会沾上污尘形成腊垢，造成景观石表面产生黄化现象。
Not only will the wool stoma block stone breathing, still can with WuChen wax scale formation, landscape stone surface produce yellowing phenomenon.
叶片黄化是叶片衰老过程中很直观的现象，与叶绿素降解和叶绿素-蛋白复合体降解有关。
Yellowing, which is related to the degradation of chlorophyll and chlorophyll–protein complexes, is a notable phenomenon during leaf senescence.
叶片黄化是叶片衰老过程中很直观的现象，与叶绿素降解和叶绿素-蛋白复合体降解有关。
Yellowing, which is related to the degradation of chlorophyll and chlorophyll–protein complexes, is a notable phenomenon during leaf senescence.
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