extents

1.The minx, miny and minz values are the minimum extents on each axis, the maxx, maxy and maxz values are the maximum extents on each axis.

minx，miny和minz个坐标轴上最小；maxx，maxy和maxz个坐标轴上最大。

2.After exogenous MJA treatment, the variation of the terpene volatiles in the conelet and cone were the same as the infested conelcets and cones, but the varying extents were not very high.

外源MJA处理后，与1年生和2年生受害球果挥发成有似变化，但变化程度要小得多。

3.The author outlines the type, characteristics of coagulant popularly used; especialy discusses the application conditions and extents of polyacrylamide, polyiron sulfate and poly alum.

介绍了目前应用凝聚剂、性质,较详尽论述了聚丙烯酰胺、聚合铁和聚合铝高子化合物使用条件和应用范围。