例如，通过测量基本音高来测量宇宙的密度。
For example, by measuring the basic pitch, you measure the density of the universe.
在低温液体火箭发动机的试验中，对液体密度的测量是很重要的。
It is very important to measure liquid density in cryogenic liquid rocket engine test.
液体密度实时测量系统由力传感器、浮子、数据采集器、电脑软件组成。
The system of liquid density measurement consists of force sensor, float, data gather, and software.
结果表明，仪器测量灵敏度、精密度较好。
The results show that the instrument is sensitive and precise.
从而实现了高精密度、大动态范围的测量。
用于泡沫材料密度测量的X射线源是特制的激发源。
The X-ray source used in this experiment is particularly prepared.
文中还讨论了提高精密度测量的条件。
The condition of obtaining high precision measure is also discussed.
文中还讨论了提高精密度测量的条件。
The condition of obtaining high precision measure is also discussed.
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