With each new measurement, Pluto got lighter and tinier, until astronomers realized that the object is in fact smaller than Earth's moon and has a very low density.
用各种测量方法重新测量后，冥王星变轻了、变小了，这时候天文学家才意识到冥王星实际上还不如月球大，并且密度也很小。
It integrated temperature and pressure sensor with vortex sensor, and it realized the accurate measurement of mass flow through the compensation of gas density.
它将温度、压力和流量传感器融为一体，通过对气体密度进行补偿，实现了精确的质量流量测量。
Theoptimurn electric current density for polishing was given incomhnation with measurement in situ.
并结合现场测试条件，提供了最佳抛光电流密度。
The two laser beam system has been used to measure the relative density of linen dust, with the feature of wide measurement range, good sensitivity and restraining the intensity fluctuation noise.
本文采用双光路激光系统，对亚麻尘的相对浓度进行了连续测量，具有测量范围宽、灵敏度好、抑制激光强度起伏噪声等特点。
The density measurement technology of foam material with low atomic number was established by low energy X-ray radioscopy .
采用低能X射线对低原子序数泡沫样品进行透射照相，以胶片作为记录介质，对材料密度进行测量。
Purpose To introduce a selfmade solid calibration phantom for bone mineral density(BMD)measurement with quantitative CT(QCT).
目的报告一种自制骨矿密度CT测量固体标准件。
Compared with the results of the manual measurement this technique can measure the density of knitted fabrics automatically, quickly and correctly.
通过与人工测量的针织物纵横密度对比表明，该技术可以快速、准确的实现针织物密度的测量。
The L2 vertebral strength obtained with the FEM was 2154 /- 685 N, and the model could detect preexisting vertebral fracture better than measurement of bone mineral density.
通过非线性有限元模型获得的L2脊椎强度为2154 /- 685N，相比骨密度测量，这个模型可以更好的发现之前存在的脊椎骨折。
The interface of the sofyware is menu - styled. the components that deal with color and luminous density measurement, including standard input, system calibration, are emphasized.
整个软体是菜单式的，重点介绍了色品坐标和亮度测量的软体，包括标准输入、系统定标和测量子程序。
The mineralogical analysis; strength and density measurement were conducted with the samples taken from the sinter cake on the pallets.
从台车烧结饼上取样，进行了物相分析、强度测定、密度测定；
Objective to evaluate the clinical value and to explore diagnostic standard of osteoporosis with vertebra bone mineral density (BMD) by measurement using quantitative computed tomography (QCT).
目的探讨定量ct (QCT)椎体骨密度(BMD)测定在诊断骨质疏松症中的临床价值和诊断标准。
This paper studied the density and the condation of Pseudopeziza medicaginis (Clib) Sacc with the method of sampling, investigation and measurement in definite spots and times.
采用定点定期采样、调查、测定的方法，研究了紫苜蓿褐斑病的发生危害的程度及发病条件。
Combining the Hubble constant measurement with estimates for the density of the universe, the team determined that the universe is approximately 12 billion years old - similar to the oldest stars.
结合哈勃常数和当前宇宙密度估值，团队确定宇宙大约有120亿岁了——与最老的恒星寿命一致。这个发现同时澄清了以前那些估值引起的似是而非的唠叨。
Combining the Hubble constant measurement with estimates for the density of the universe, the team determined that the universe is approximately 12 billion years old - similar to the oldest stars.
结合哈勃常数和当前宇宙密度估值，团队确定宇宙大约有120亿岁了——与最老的恒星寿命一致。这个发现同时澄清了以前那些估值引起的似是而非的唠叨。
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