质外体是木质部外方物质运动的一个重要途径，例如物质穿过根冠。
It is an important pathway for movement of these substances outside the xylem, for example across the root cortex.
由背部维管束运来的养分经珠心突起先卸至质外体，其后再由糊粉层细胞吸收；
The nutrient transported from dorsal vascular bundles first unloaded into apoplast via nucellar projection, then was absorbed by aleurone layer cells;
钙离子在果实和叶片中的运输和分配不仅通过质外体途径也通过共质体途径。
There are both apoplastic and symplastic pathways of Ca2+ transport in fruit or leaf tissue too.
质外体在细胞间的通讯及识别上有重要意义，质外体信号分子对植物细胞的生长发育也起着非常重要的作用。
The apoplast is of essential significance in cell communication and identification; the apoplast signal molecules, too, plays an important role in the growth and development of plant cells.
对于均质连续岩体，通过模拟围岩抗力，可以仅取衬砌及其附近围岩作为分析对象，将水工压力隧洞应力分析转化为受内、外压的厚壁圆筒。
When the hydraulic pressure tunnel is pressed by water, the concrete of tunnel transfers the pressure to the surrounding rock mass, and it also is pressed by the rock reaction force at the same time.
对于均质连续岩体，通过模拟围岩抗力，可以仅取衬砌及其附近围岩作为分析对象，将水工压力隧洞应力分析转化为受内、外压的厚壁圆筒。
When the hydraulic pressure tunnel is pressed by water, the concrete of tunnel transfers the pressure to the surrounding rock mass, and it also is pressed by the rock reaction force at the same time.
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