Passive transport by facilitated diffusion requires the presence of specific integral membrane proteins to facilitate the movement of the molecule across the membrane.
协助扩散的被动运输则要求特定的内在膜蛋白去帮助分子完成跨膜运动。
Red blood cell with a biconcave disc shape is to provide a large surface area to volume ratio to facilitate the diffusion of gases.
红血球的双凹面圆盘形可以增加它的表面积，以利气体的扩散。
Some policy recommendations were put forward to facilitate clean technology adoption and diffusion in China regarding current environmental regulation framework.
针对我国目前的环境监管现状，本文为制定有助于清洁技术采纳和扩散的环境政策提出相应建议。
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