英语词源
- density (n.)
- c. 1600, from French densité (16c.), from Old French dempsité (13c.), from Latin densitas "thickness," from densus "thick, dense" (see dense).
权威例句
- 1. the density of a gas
- 一种气体的密度
- 2. The population density of that country is 685 per square mile.
- 那个国家的人口密度为每平方英里685人.
- 3. Mercury has a much greater density than water.
- 水银的密度比水大得多.
- 4. This paper introduces a Pulse - Density - Modulated ( PDM ) load resonant induction heating power based on DSP.
- 介绍了基于数字信号处理器(DSP)设计的PDM ( Pulse 鄄 Density鄄Modulation ) 负载谐振式感应加热电源.
- 5. VEGF expression and microvessel density ( MVD ) in tumor tissue were measured by immunohistochemistry.
- 免疫组化检测瘤组织中VEGF蛋白表达及组织内的微血管密度 ( mi-crovessel density,MVD ) 改变.
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