density: n.1.稠密；浓厚。2.【物理学】浓度；密度；比重。3.愚钝，昏庸。短语和例子traffic density 交通量。 the density of population 人口密度。
Example Sentences:
1.
The zero point of the density scale is defined by having no specimen in the densitometer . 定义密度计内没有样品时的密度为密度尺标的零点。
2.
Yarn linear density scales 测定纱线细度用支数秤
3.
The plasma density scale length given by combination of ponder - motive force and thermal pressure is suitable for vh . considering the spatial intensity distribution in focal spot , the ra may give some contribution in some place X射线是各向同性的， x射线产额随入射激光强度的降低而减小，当强度小于10 ~ ( 15 ) w cm ~ 2时，不再有硬x射线产生。
