科技英语阅读翻译

1all elements are composed of scattered units called atoms,which are the smallest particles than show the characteristics of the element. atoms are tiny units of matter composed of positively charged protons, negatively charged elements ,and electrically neutral neutrons. protons and neutrons, which have almost the same mass,are clustered in the nucleus in the middle of the atom. electrons,which are tiny in comparison to the other units, move around the nucleus at high speed. atoms that have the same number of electrons and protons are electrically neutral. those that have got or lost electrons,and therefor are positively or negatively charged, are called ions.

所有的元素都称为原子的散射单元，这是比显示的元件的特性的最小的颗粒组成。原子是微小单位的物质组成的带正电的质子，带负电荷的元件和电中性的中子。质子和中子，它们具有几乎相同的质量，聚集在细胞核内的原子在中间。的电子，这在其他单位相比是微小的，围绕原子核高速移动。具有相同的电子和质子数的原子是电中性的。那些已经得到或失去电子，因此是正或负电荷，被称为离子。

2the arrangement of the leaves in the horse chestnut, when examined at the end of a shoot and vertically, has been termed a leaf mosaic, because of the variegated pattern that the leaves of this tree present.

检查时，安排在七叶树的叶子，在拍摄结束，垂直，已经被称为叶镶嵌的杂色图案，因为此树的叶子本。

3they noted that the number of green roofs in the city is permanently increasing, thanks to a combination of subsidies and zoning laws, which require green roofs in certain areas.

他们指出，在城市的屋顶绿化永久增加，由于补贴和区划法，这就需要在某些领域的屋顶绿化相结合的。

4the pervasiveness and near-invisibility of computing will be helped along by new technologies such as cheap, flexible displays, fingernail-sized Mems (microelectro-mechanical systems)chips capable of storing terabytes of data, or inductively powered computers that rely on heat and motion from their environment to run without batteries的新技术，如便宜，柔性显示器，指甲盖大小的MEMS（微机电系统）芯片能够存储TB级的数据，或电感供电的计算机依赖于热和运动的普遍性和接近隐形的计算将帮助从他们的环境中运行不带电池

5but the technology has now been applied to almost all forms of life, from pets that glow under UV light to bacteria which form HIV-blocking"living condoms", and from pigs bearing spinach genes to goats that produce spider silk.

但该技术目前已被应用到几乎所有的生命形式，从宠物紫外光下发光的细菌形成，阻断艾滋病毒“居住避孕套”，菠菜基因的轴承生产蜘蛛丝的山羊和猪。

6the radio valves which contained a gas at very low pressure were replaced later by the devices made of semiconductor in solid state called transistor which were much smaller and had a

longer life than gas valves.

无线电阀，其中载有气体在很低的压力下被替换，后来由固态的半导体设备被称为晶体管小得多，有更长的寿命比燃气阀门。

7it is estimated that one-third to one-half of the world's current croplands are losing the soil which forms the top layer of ground faster than it is being replaced

据估计，有三分之一到二分之一，目前世界上农田失去最佳接地层的土壤形成速度比它被替换

8without the organisms living in soil, the earth would be covered with sterile mineral particles far different from the rich , living soil ecosystems on which we depend for most of our food

没有土壤中的生物，地球会被铺上无菌矿物颗粒的丰富，生活的土壤生态系统远不同于我们赖以大多数我们的食物

9the shortages of the wood that is used as fuel cause local people to cut down the forest that stabilize mountain soils.

被用作燃料的木材的短缺，导致当地群众砍伐森林，山地土壤稳定。

10the SI unit of electromotive force named after an Italian scientist, which is the difference of potential that would carry one ampere of current against one ohm resistance.

意大利的一位科学家的名字命名的，这是对欧姆电阻电位差，将进行1安培电流的电动势的SI单位