If i now rub one of these crumbs till it is fine, i reduce it to tiny fragments that can hardly be seen . 如果我把其中的一粒捻得更细一点，它就会成为肉眼几乎辩不清的微粒。
Moving components which may have previously deposited layers that can flake are also another source of particles . 原来已淀积有可剥落薄层的移动原件也会成为微粒的另一个来源。
The photoelectric effect and the compton effect, then, both seem to demand a return to a corpuscular theory of light . 因此，光电效应和康普顿效应似乎都要求回到光的微粒说上来。
The physics and theory of interception and retention of fine particles by vegetation are well beyond the scope of this book . 植被对微粒的阻截和滞留的物理学原理和理论不属于本书范围。
Macrophages phagocytize foreign materials such as dust and carbon particles in the lung, as well as vital dye particles . 巨噬细胞吞噬异物，如肺内的尘埃及碳粒，同样还有活体染料的微粒。
We exclude the complication such as those brought about by chemical reactions, fallout, washout, and absorption by vegetation . 我们不考虑诸如由化学反应，微粒回降，冲洗以及植被吸收等引起的复杂因素。
For noncatalytic operations at high temperature the agglomeration and sintering of fine particles can necessitate a lowering in temperature of operation . 对于一些高温非催化操作，由于微粒易于聚集和烧结，不得不降低操作温度。
