专业英语

d the level of a country‘s development may be judged by the production level and sophistication of its chemical industry. 很显然简单地看一下化学工业在满足我们的主要需求方面所做的贡献就可以知道，没有化工产品人类社会的生活将会多么困难。 事实上

芳香族化合物可以从煤焦油中分离得到。 煤焦油是煤炭化工过程的副产物。 动植物油脂，是为数不多的脂肪族化合物的特定的资源，这些脂肪族化合物包括长链脂肪酸（如正十八酸）和长链醇（如正十二烷醇）。 化石燃料（即石油、天然气和煤）的形成要花上百万年，一旦用掉就不能被替换，因此，它们称之为不可 再生的资源。 这与来自于植物的碳水化合物恰恰相反，碳水化合物能够较快被更新。 一种较为普遍应用的资源为蔗糖 —

ctivists believe that learners construct their own reality or at least interpret it based upon their perceptions of experiences, so an individual’s knowledge is a function of one’s prior experiences

stic crosssectional area Polymerization reaction double bond Chemical postion/constituent degradation by oxidation。 Polymers with different chemical structures have different physical properties and

Measuring current 4． 基极电流 Base current 5． 无线电传输 Radio transmission 6． 数字集成电路 Digital integrated circuit 7． 组合逻辑门 Combinational logic gate 8． 结构化语言 Structured language 9． 双踪示波器 Dual trace oscilloscope

ch as the river deltas of West Africa, the inland waters of the Louisiana swamps, or the shallows of Lake Maricaibo, Venezuela. 显然，这种钻机只能用在相对较浅的，沼泽地区，例如：西非的river deltus，路易斯安 那沼泽的内陆河或者委内瑞拉的 Lake

ing/chips Cellar ，大方井 Blowout preventer (BOP) Blow out Blowout Gush Gusher Kick ； Truckmounted rig Tractortrailer Portable rig Mast Jack up ，顶起 Spudding in Spud in Conductor hole Conductor casing

d on deck for stowing containers. Some rollon rolloff (RoRo) vessels also have hatch covers to enable loading of lower decks with containers. Where cargo (with or without wheels) is loaded and

11. static load test of pile 单桩竖向静荷载试验 12. vertical allowable load capacity 单桩竖向容许承载力 13. low pile cap 低桩承台 14. highrise pile cap 高桩承台 15. vertical ultimate uplift resistance of single pile 单桩抗拔极限承载力

能够顶起液柱而使油井自喷。 如果不够大的话，就必须利用人工举升的方法。 17. Natural gas dissolved in oil will e out of solution and form bubbles, which expand as the fluid pressure is reduced. 溶解在原油中的天然气将从溶液中跑出来并形成气泡，这些气泡随流体压力降低而增大。 18