So, you can get the mass of a flat object with density.
因此，可以通过密度求一个平面物体的质量。
We knew the density of steel, and so you can figure out the mass, just take my word for it.
我们知道铁的密度，所以你能算出质量，相信我说的。
The gap between them will change as the ships pass over regions of higher and lower mass, providing clues to the density of the subsurface moon.
两个飞行器间的距离会随着飞船经过的区域的密度高低的变化而改变，为月球表面的密度提供线索。
Strength training has been proven to increase bone density, increase lean muscle mass, improve posture, and reduce the risk of injury.
已证实，力量训练能增大骨质密度，增加瘦肌体积，改善姿势，减少损伤的风险。
The control group showed a decrease in soleus muscle mass and strength, the development of insulin resistance, and a loss of bone mineral density and resistance to breakage.
控制组的老鼠表现出比目鱼肌质量和力量下降，胰岛素抵抗上升，骨密度和抗折能力降低。
If you have a problem asking you to find the center of mass of something and you have no information about the density, assume it is uniform.
如果一个问题，需要知道某物的重心，而又不知道其密度，就可以假设它是个常数。
Scientists believe that Mercury's core — an immense iron body that accounts for roughly 75 percent of the entire planet's mass — has helped the planet to win the density prize.
科学家认为，水星的核心- -一个巨大的铁体，大约占整个行星的75%——帮助这个星球赢得密度奖。
You are shrunk to the height of a nickel and your mass is proportionally reduced so as to maintain your original density. You are then thrown into an empty glass blender.
假设你被缩小到一枚硬币那么大，你的质量也同比例缩小以保持你的密度不变。
Although it only makes up roughly 2 percent of the sun's volume, it is almost 15 times the density of lead and holds nearly half of the sun's mass.
尽管它只占太阳总体积的2%，但其密度可达铅的16倍，并占有差不多一半的太阳质量。
Well, we know the mass of the moon, the density and so forth, but don't think that you fully understand the properties of lunar green cheese, this is very dense cheese.
好吧，我们知道月亮的质量，密度等数据，但是不要觉得你完全理解月亮绿奶酪的属性，这是种非常致密的奶酪。
The volume, area, and density of the fusion mass were significantly increased by augmentation with bone marrow cells.
通过加入骨髓细胞，融合组织团的的数量，面积和密度有显著增加。
The probability density function (PDF) is constructed from the time distributions of signal and backgrounds and the relations among time, time uncertainty, mass, and mass difference variables.
根据信号、本底的时间分布以及时间、时间误差、质量、质量差等变量之间的关系，构建概率密度函数。
And mass will be double or triple integral, depending on how many dimensions you have, dV of whatever density function you have, dA or dV.
计算质量可看成二重或三重积分，这取决于空间维数，取决于密度函数，dA还是。
The earth has more mass and so part of this density is attributable to gravitational compression.
地球有更多的质量和密度，使这部分是由于引力压缩。
OBJECTIVE: To analyze the effects of age, menopausal duration, menopause age, height, body mass and body mass index on bone mineral density (BMD) in postmenopausal women.
目的：分析年龄、绝经年限、绝经年龄、身高、体质量及人体质量指数对绝经后妇女骨密度的影响。
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。
We can only speculate at the core composition of mercury, but it has a very high density for its radius so it is likely to have a large metallic core accounting for most of its mass.
我们只能推测在汞的核心成分，但它有它的半径密度非常高，所以很可能有一个大的金属的群众最核心的会计。
A useful unit converter can help you make the daily calculation, including conversion of area, density, energy, force, length, mass, power, pressure, speed, temperature and volume.
一个有用的单位转换器可以帮助您日常计算，包括面积，密度，能源，力，长度，质量，功率，压力，速度，温度和体积的转换。
A distribution of air pressure and the mass of a given volume of air such that the air density is not a function only of atmospheric pressure.
一种气压的分布情况，其中给定体积内的空气质量，即空气的密度，不仅仅是气压的函数。
According to the law of mass conservation the incremental mass density can be inferred from the divergency of the scalar unperturbed mass density and the vectorial displacement field.
由质量守恒定律，质量密度增量来自未挠动的质量密度的散度和位移矢量场。
Investigators measured height, weight, and blood pressure, calculated body mass index, and obtained levels of serum total cholesterol and high-density lipoprotein cholesterol.
研究者测量了受试者身高、体重和血压，计算出体重指数，并测出血清总胆固醇和高密度脂蛋白蛋白结合胆固醇的水平。
The solutions for optical mass storage system and their principles are analyzed briefly, based on which, the key technologies for the improvement of the recording density are discussed.
在此基础上，扼要分析了现有提高存储器存储密度的思路及关键技术，给出当前国际先进水平的技术指标。
To test the technique, researchers compared measurements of bone thickness at the femur, hip and spine using the gold standard approach of bone mass density, and their new technique.
为了验证这项技术，研究者应用金标准的方法和他们的新技术比较了股骨的骨厚度，髋骨和脊柱骨。
The result was a remarkably accurate estimate of a parameter called the gravitational constant, and from that Cavendish was able to calculate the density and mass of the earth.
测量结果惊人的准确，他测出了万有引力恒量的参数，在此基础上卡文迪许计算地球的密度和质量。
A distribution of air pressure and the mass of a given volume of air such that the air density is a function of only atmospheric pressure.
气压的-种分布情况，给定体积内空气质量，即空气的密度，仅仅是气压的函数。
By means of the thermo field dynamics, the change of nucleon effective mass in nuclear matter with density is discussed.
用热场动力学方法计算了核物质中核子有效质量随密度的变化关系。
It also gives out a variable coefficient density compensation formula used for measurement of mass flow of the low pressure saturated steam, and the features of this formula.
给出了一个用于低压饱和蒸汽质量流量测量的变系数密度补偿式和该补偿式的特色。
The density, mass, and size compare favorably to that of Earth. But, the atmosphere and surface features differ markedly.
它密度、质量和大小都和地球差不多，但大气和表面却截然不同。
Based on the measured data from the winter wheat fields in Zhengzhou of Henan Province, the vertical distribution of root length density(RLD)and root mass density(RMD)were analyzed.
根据在郑州进行的冬小麦根系田间实测资料，研究了根长密度和根质量密度在砂壤土中的垂直分布。
The mass of cortisol adenoma was bigger, middling density.
皮质醇腺瘤肿块稍大，中等密度。
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