阐述低浓度复肥与高浓度复肥成粒的不同特点。

The characteristics of low and high analysis compound fertilizers are expounded.

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大多数计算磨削表面粗糙度的理论公式都是基于砂轮表面磨粒与工件表面的几何创成机理建立的。

Most of the theoretic formulas to calculate the ground surface roughness are based on the geometrically generating interaction between grits and workpiece surface.

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一种粗粒的，深成的或侵入的长英质成分的火成岩，含石英、长石和云母的粗大晶体。

A coarse-grained, plutonic or intrusive igneous rock of felsic composition having large crystals of quartz, feldspar and mica.

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Now one of the big advantages of plasmids,I already mentioned, is that you can take this plasmid and a plasmid is one - you can think of it as a highly tuned machine for copying itself.

质粒的一个很大优势,我提到过,是你可以用这个质粒,而质粒是一个--,你可以把质粒想成,一个高度调谐的自我复制的机器

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