1 | However the toxic properties of beryllium limit its application. | |
2 | Look at beryllium 2 plus, very tiny, charge plus two. | |
3 | 在管道内与流体接触的部件是黄铜和铍铜合金。
Parts in contact with liquid in pipe are of brass and beryllium copper. | |
4 | 一微克,又是一微克,铍是周期表上最有毒的元素之一。
Microgram for microgram, beryllium is one of the most toxic elements on the periodic table. | |
5 | 一旦人体吸入这些物质,铍就象在身体里的定时炸弹。
Once inhaled, beryllium is like a time bomb in the body. | |
6 | 我们使用稀有的同位素铍-10来测定。铍-10是由宇宙辐射形成,存在于地表中。
We use the rare isotope Beryllium-10, which develops in the land surface via cosmic radiation. | |
7 | 我们有所需要知识,未来,我们能防止和铍有联系的病的发生。
And we have the knowledge needed to prevent beryllium -related disease from occurring in the future. | |
8 | 但加填充材料对铍进行高能束焊接可使焊缝形成钎接焊。
But high energy beam welding makes the welded seam become braze-welding when adding fill material. | |
9 | 研究预热对铍环激光束钎焊过程温度场和应力场分布的影响。
The effects of preheating on temperature and stress fields of beryllium ring during laser brazing process were studied. | |
10 | 他从来没有想过,在“一点儿铍”的边上工作,有一天会毁了他的肺。
He had never expected that working around "a little beryllium" would someday destroy his lungs. | |
11 | 绿宝石其实是一种铍铝硅酸盐,而它的颜色则来自于微量的铬元素。
Beryl is a beryllium-aluminum silicate, and its color comes from small amounts of chromium. | |
12 | 然而,美国预备品总数数百万吨,而且他们是现在可得的如铍一个来源。
However, U. S. reserves total several million tons, and they are now available as a source of beryllium. | |
13 | 铝、铍、碳(碳-14)、氯、碘和氖的同位素都可以经由宇宙射线散裂产生。
Isotopes of aluminum, beryllium, carbon ( carbon-14 ), chlorine, iodine and neon, are also formed through cosmic ray spallation. | |
14 | 仅仅考虑周期性规律,是无法理解这个问题的,这里显示硼的电离能,实际上比铍的要小。
And the glitch that doesn't make sense just through periodic trends, is that it turns out that the ionization energy of boron is actually less than the ionization energy up beryllium. | |
15 | 但是值得注意的是,这种铍青铜模具制造工艺的主要优势不及采用这种工艺所获得的模具性能优势多。
It should be noted, however, that the major advantage is not so much the mould making process as the properties obtainable from beryllium-copper. | |
16 | 那么我们将铍作为第一个例子,它有四个电子,这也是我们为什么能知道它是铍的原因,硼有五个电子。
So, we have beryllium in the first case here, it has four electrons, that's how we know it's beryllium, boron has five electrons. | |
17 | 含铍条纹状蚀变岩的发现在找矿预测中起到了致关重要的作用,为找矿工作开拓了新的思路。
The Be bearing striation altered rock played a vital role in ore prospecting and forecasting and provides a new concept for ore searching. | |
18 | 矿床的形成与富碱性热液和钙碱性正长花岗岩有关,为中温热液型铍矿床,形成于中生代燕山晚期。
Ore-forming has close relation with rich-alkalescence geotherm and calc alkali syeogranite, which belongs to middle temperature geothermal beryllium deposit, and formed in Mesozoic Yanshan period. | |
19 | 马特罗夫相信,可以在空间组装一种厚度仅为50纳米的铍材料太阳帆,它将使得这一时间缩短到约2000年。
Matloff believes a 50-nanometer beryllium sail, built in space, could potentially make an interstellar voyage in as little as 2,000 years. | |
20 | 但是最有趣的部分也许是其6.5米口径的主反射镜,它由轻质铍制成,镀以黄金,并被分割为18个相互连接的部分。
But perhaps its most interesting part is the six-point-five meter wide mirror. Made of light-weight beryllium, the mirror is covered in gold, and divided into 18 linked parts. |