大多数金属密度相对较高，尤其是和聚合物相比较而言。
Most metals have relatively high densities, especially compared to polymers.
铜电镀工艺后表面的不平整度通常取决于版图关键特征，包括线宽，线间距和金属密度。
The non-planarity of a surface post electroplating process is usually dependent on variations of key layout characteristics including line width, line spacing and metal density.
超大碰撞可能剥去了水星的一部分岩石地幔，留下了一个金属核心，其密度与原来的岩石与金属的比例相比大得不成比例。
A titanic impact could have stripped away a portion of its rocky mantle, leaving behind a metallic core whose density is out of proportion with the original ratio of rock to metal.
类地行星主要是岩石：密度大的石块和金属物质，同时会有少量的气体。
The terrestrial planets are mostly rocks: dense rocky and metallic material, with minor amounts of gases.
据推测它的密度表明它的核心是金属的，可能主要由铁制成。
Its density is presumed to indicate a metallic core, probably made mostly of iron.
从其密度可以推测出它有一个金属内核，可能绝大组成部分是铁，其他的解释都不靠谱。
Its density is presumed to indicate a metallic core, probably made mostly of iron. No other explanation is plausible.
但如果，密度可能是变化的，因为它是许多金属的混合物，或者厚度在变化等等，但你仍然可以通过对密度积分得到质量。
But if, actually, it has varying density maybe because it is some metallic thing with various metals or with varying thickness or something then you can still get the mass by integrating the density.
铱：如果铱听起来让你觉得熟悉，那可能是因为很多通讯卫星都是以这种硬而脆的大密度金属元素命名的，也可能是因为恐龙在白垩纪末从地球灭绝，与铱有关的缘故。
Iridium (Ir): If iridium sounds familiar, that might be because there’s a group of communications satellites named after this element, a hard, brittle and dense metal.
锇：是一种密度大的自然元素——其密度是铅的两倍——这种蓝灰色的金属在需要硬度和稳定性的应用领域大放异彩。
Osmium (Os) : The densest of natural elements-twice as dense as lead-this blue-grey metal finds a home in applications where hardness and durability are essential.
由于密度不同，因此几种液态金属材料彼此之间并不会混合在一起，而会像油水那样出现分层结构。电池被装在一个不锈钢罐中，保持500度高温以便金属处于液化状态。
The battery is encased in stainless steel and is reported to have to maintain a temperature of 500 degrees to keep the metals inside in liquid form.
零件表面能被低熔点金属渗透以增大密度、强度、硬度、延展性和抗冲击能力。
A part surface can be infiltrated with a low melting point metal to increase density, strength, hardness, ductility and impact resistance.
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。
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.
激光作为一种精密可控的高能量密度的热源，可对金属表面进行多种强化处理。
Laser as a heating source of high energy density of accurate control, can carry out multiple-sort strengthening treatment to the metal surface.
然而，诸如铝和镁之类的一些金属则具有低密度，并被用于既需要金属特性又要求重量轻的场合。
However some metals such as aluminum or magnesium have low densities and are used in applications that require other metallic properties but also require low weight.
然而，诸如铝和镁之类的一些金属则具有低密度，并被用于既需要金属特性又要求重量轻的场合。
However, some metals such as aluminum or magnesium have low densities, and are used in applications that require other metallic properties but also require low weight.
在金属中锇的密度很高。
某些金属合金，例如铝基合金，其密度低，可用于航空航天以节约燃料。
Some metal alloys, such as those based on aluminum, have low densities and are used in aerospace applications for fuel economy.
覆盖物是不同密度的穿孔金属组成的一个巨大的方形表面，其外观不断变化。
The covering is a vast prismatic surface composed of different types of perforated metal in varying densities, whose appearance is constantly changing.
当稀土金属盐加入量为2%时镀层密度最大、显微硬度最高。
When the RE metal salt was 2%, the coating had the best density and hardness.
金属基燃料与水反应具有能量密度高的特点，可用于水下高速推进，也可用于新一代燃料电池。
With the characteristic of high energy density, the reaction between metal matrix fuel and water can be used for underwater high-velocity propulsion and new generation fuel cell.
用数值模拟方法研究了金属管道裂纹尖端磁通量密度的分布情况。
The magnetic flux density on the crack tip in a metal pipeline was studied by numerical simulation method.
电铸阳极的形状和位置决定了阴极表面电流密度的分布，并最终影响金属沉积层分布的均匀性及其材料性能。
In the electroforming process, the anode electrode shape and position determine the current density distribution on the cathode and so the distribution and properties of the deposited metal.
离子簇的大小和密度受金属反离子的影响。
The size and density of ionic clusters depended on the different metal counterions.
为开发耐热、耐磨、成本较低、制备较为简便的新型低密度金属基复合材料提供了理论和实验基础。
It provided theoretical and practical bases for the development of new low cost low density heat resisting and wear resisting metal based composite by simple and convenient fabrication.
利用交流电桥和约利弹簧秤组成实验装置，测量了金属的线胀系数和液体的密度。
Coefficient of linear expansion of metal and density of liquid are measured by the experiment device which is composed of AC bridge and Joly spring balance.
金属件成形精度和密度是快速成形技术在工业应用中的关键问题之一。
The precision and density of metal parts iso ne of the key problems in the application of rapid prototyping technology to Indus try.
借助金属层，其光学密度已达到5.5。由于这种有机材料是负性光敏抗蚀剂，所以加工过程相当简单。
Its optical density, with help from a metallic layer, has been achieved at 5.5. Since this organic material is a negative photoresist, the fabrication process is rather simple.
借助金属层，其光学密度已达到5.5。由于这种有机材料是负性光敏抗蚀剂，所以加工过程相当简单。
Its optical density, with help from a metallic layer, has been achieved at 5.5. Since this organic material is a negative photoresist, the fabrication process is rather simple.
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