High-density polyethylene and low-density polyethylene were the second and third place polymers.
高密度聚乙烯和低密度聚乙烯是在名单中排在二位和三位的高聚物。
While Burchard was experimenting with refrigerator insulation, he came up with a novel way of molding low-density foam.
那年伯查德正在做有关冷冻机隔热材料的实验，实验中他使用新的方法做出一种低密度的泡沫材料。
The main culprit, LDL (for low-density lipoprotein), is the body's oil truck, circulating in the blood, delivering fat and cholesterol to the cells.
主要的“罪犯”是低密度脂蛋白胆固醇，它是身体的运油车，在血液里向细胞传输脂肪和胆固醇。
Following a lifestyle that decreases LDL (low-density lipoprotein) and increases HDL (high-density lipoprotein) is the primary path to lower cholesterol.
在日常生活中，人们一般把降低低密度脂蛋白ldl和增加高密度脂蛋白hdl当作是降低胆固醇的主要的路径。
It's no wonder that, over the last decade, even in a time of renewed interest in urban centers, low-density suburbs grew at three times the rate of the cities they surround.
这也就难怪，在过去的10年，即使是在振兴城市中心的时候，低密度郊区的增长是所包围的城市的三倍。
Low density polyethylene makes a nice substitute for PVC. It has a simple makeup and doesn't require additives to make it soft and pliable.
低密度的聚乙烯是PVC很好的替代品，它的生产过程相对简单，也不需要添加化学物质增加柔软性。
Low cultivated density is propitious to form vesicle and arbuscule.
低栽培密度有利于形成泡囊和丛枝结构。
Low energy density means there are few calories in a lot of food.
而低能量密度意味着食物量虽大卡路里含量却很低。
CT appearance of glioblastoma multiforme was low density image, intratumorally apoplexy was high density image.
多形性胶质母细胞瘤CT 表现为低密度影，瘤内卒中表现为高密度。
The material's large surface area, flexibility, low density, and high conductivity also make it compelling for energy storage.
材料的巨大表面积、弹性、低密度以及高导电性使得它也可以用于储存能量。
Insects and pathogens are integral components of forest ecosystems and normally are present at a relatively low density, causing little damage, and having negligible impact on tree growth and vigour.
昆虫和病原体是森林生态系统的固有成分，通常其密度相对较低，所造成的损害较小，对树木生长及其活力的影响微乎其微。
They're pretty close to the ground, but these warblers also nest in forests that have low shrub density.
它们离地面很近，但是这些蓝莺也会在灌木密度低的森林里面筑巢。
Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.
尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。
Just as it is sometimes useful to speed up to move quickly through writing with a low information density, you often need to slow down to catch the important or confusing bits.
有时候你需要快速浏览过一些信息密度很低的内容，但对于一些重要或感到困惑的内容则应该慢慢读。
First is free flow in which the density of traffic is low enough to allow vehicles to travel at the maximum speed allowed.
首先是畅通无阻，交通密度足够低，使得车辆能以最高时速行驶。
Its low density has led scientists to speculate that it may consist of porous, icy material.
土卫十六密度较低，科学家因此推断它可能由多孔冰物质构成。
Grapes have a low energy density - 1 cup of grapes has about 104 calories.
葡萄的能量密度低，一杯葡萄含大约104卡路里。
Conversely, when atmospheric carbon dioxide is low, stomatal density tends to increase - it's like getting more mouths to breathe with.
相反，当大气二氧化碳浓度低时，气孔密度似乎增加了——就像长出更多的嘴来呼吸。
Three main factors play a role in what makes food high or low in energy density.
决定食物能量密度高低的因素主要有三个。
If you also have low bone density, your risk is even higher.
如果骨密度还比较低的话，那可能性就更大了。
By comparison the density of silica aerogels - the world's lightest solid materials - is only as low as 1.0mg per cubic cm.
相比之下，世界上最轻的固体材料——硅土气凝胶的密度最小也要每立方厘米1.0毫克。
Good power density means a shape like a peanut butter jar, easy to fill or empty; low power density is more like a wine jug with a narrow neck.
电能密度好的就像花生酱罐子口，很容易装满或倒空；电能密度差的就像窄瓶口的酒壶。
Coal from this region is low in sulphur, and so burns more cleanly, but has a relatively low energy density unless treated.
该区域的煤含硫量低，也因此更为清洁，但是在处理前能值(energydensity)相对较低。
This is a low energy-density device, which stores electricity directly by charging two conductive plates with static.
（和电池相比，）这是一种“低能量密度”设备，电能被直接存储在两块静止的导电板上。
As hare density increases, the quantity of these twigs decreases, forcing the hares to feed on low-quality high-fiber food.
随着野兔密度的增加，这些树枝的数量减少，迫使野兔以低质量的高纤维食物为食。
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。
The firm says the low power-density of its lasers and a series of safeguards ensures that human exposure remains within regulatory limits.
公司称他们的低能量密度激光和一系列防护措施能保证暴露在其中的人体处于安全范围之内。
The firm says the low power-density of its lasers and a series of safeguards ensures that human exposure remains within regulatory limits.
公司称他们的低能量密度激光和一系列防护措施能保证暴露在其中的人体处于安全范围之内。
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