脑石

Under the condition of consumption of raw material naphtha not to be increased, two processes of pre-hydrogenation and pre-extraction was developed in the ethylene complex project and the investment and operation cost evaluated.

在不增加石脑油原料消耗量前提下，开发乙烯联合装置裂解原料前加氢和前抽提2个改进流程，并计算该装置的工程投资与运行费用。

Macintosh found that naphtha — a volatile, oily liquid created in the distillation the aforementioned coal tar, as well as petroleum — could be used to waterproof fabrics. In 1823, he patented what was the first truly waterproof fabric, supple enough to be used in clothing.

麦金托什发现，石脑油——在蒸馏前面提到的煤焦油以及石油的过程中所产生的一种易挥发的油状液体——可用于防水织物。1823年，他获得了第一个真正的防水织物专利，这种布料相当柔软，可用来做服装。

Be sure to check over all of the surfaces for small areas of discoloration before the naphtha solvent has evaporated.

在石脑油完全挥发之前一定要仔细检查整个表面的色差。

After this final sanding, wipe down all of the surfaces with naphtha solvent and let completely dry.

这样处理完之后，再用石脑油擦遍整个琴体后晾干。

From April 1, 2006, this tax was imposed on naphtha, solvent oil and lubricant at RMB 0.2 yuan per litre and fuel oil at RMB 0.1 yuan per litre, and temporarily 30% of the tax is payable.

自2006年4月1日起，开始对石脑油、溶剂油、润滑油按每升0.2元和燃料油按每升0.1元计算应纳税额，并暂按该应纳税额的30%缴纳。

Each venture up a rock face was, for him, an act of analysis.

每一次冒险，每一次攀爬对他来说都像做一道数学上的分析题；每一次抱石之前，他都在脑中把攀爬过程分解。

It undertakes fuel oil, polymer, paraffin wax and chemical fibre, with the main products of non-lead gasoline, light diesel fuel, 20# heavy diesel fuel, topped oil, naphtha, aviation kerosene, cracked diesel oil, fuel oil, base oil, isomer dewaxing oil, liquid petroleum gas, propane, propylene, MTBE, benzene, toluene, xylene, paraffin wax, polyacrylamide, acrylonitrile, ammonia sulfate, semi-refined asphalt, acrylon, furfural extract oil, liquid nitrogen, etc, totaling 338 varieties and more than 100 kinds of brands.

它的主要产品有：高标准清洁汽油、无铅汽油、轻柴油、重柴油、航空煤油、化工轻油(拔头油、裂化原料油、石脑油)、燃料油、&老三套&基础油、异构脱蜡基础油、液化石油气、丙烷、丙稀、MTBE、石蜡、聚丙稀酰胺、丙稀腈、硫胺、硫磺、三苯、半炼沥青、腈纶、糠醛抽出油、液氮等38种100多个牌号的石油化工产品，产品辐射全国25个省、市、自治区。2000年销售收入119.9亿元。

Group A = atmospheres containing acetylene; Group B = atmospheres containing hydrogen; Group C = atmosphere containing ethyl-ether vapors, ethylene, or cyclopropane; Group D = atmospheres containing gasoline, hexane, naphtha, benzene, butane, propane, alcohol, acetone, benzol, lacquer, solvent vapors or natural gas.

组A =大气中含有乙炔；组B =大气中含有氢；组C =大气中含有乙醚蒸汽，乙烯，或环丙烷；组D =大气中含有汽油，乙烷，石脑油，苯，丁烷，丙烷，酒精，丙酮，不纯苯，漆，溶剂蒸汽，或天然气。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。