symplast怎么读,symplast的音标和真人发音
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symplast是什么意思,symplast的意思是

共质体

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By way of analysing the structural characteristics of root tip , this paper clarifies that the root hair zone is the main position in absor bing mineral nutritions , and the absorption way is divided into apoplast and symplast channel because of the existence of the casparian strip in the root tip .
本文通过分析根尖的结构特点,阐明了根毛区是矿质养分吸收的主要部位,其吸收途径因根尖凯氏带的存在而分为质外体途径和共贡体途径。