gas density balance [仪] 气体密度天平 ; 气体＜密度＞天平 ; 气体密度计
gas density balance detector 气体密度天平检测器
Electronic Density Balance 电子密度天平
Color density balance equation 彩色密度平衡方程式
Scientists have known for a long time that aerosols such as soot, dust and other small particulate matter, alter cloud density and the radiative balance of the atmosphere.
科学家们很早之前就发现，诸如煤烟、灰尘和其他细小的微粒，能改变云体的密度及大气的辐射平衡。
As we get older, we lose lean muscle mass, bone density, balance and flexibility-all of which can make it harder to move around.
当我们逐渐衰老是，我们会丧失一些肌肉组织，骨骼密度、平衡能力和灵活性，这些都将使我们行动力减退。
Total bone mineral density, balance, and flexibility did not improve significantly in either group.
在两组中，总体的骨矿物质密度、平衡能力和灵活性没有明显的提高。
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