In this paper,through the adding of minute rare earth oxides La2O3 and CeO2 in the electrode covering,we study their effects on high temperature oxidation and corrosion resistance of the weld metal in the air and sulphureous gas.

本文通過在焊條藥皮中分別添加微量稀土氧化物L(fēng)a2O3及CeO2欧美乱伦网站，研究其對(duì)焊條熔敷金屬在空氣中和含硫氣氛中抗高溫氧化及腐蝕性能的影響久久三级片精品区。

The major sulfur containing compounds identified in the odor concentrate of cultured prawn were thiazole compounds.

養(yǎng)殖對(duì)蝦中以GC-MS鑒定的含硫化合物主要是噻唑類化合物久热精品视频。

To avoid the argument, we employed thiophosphate chemistry in the repair patch mapping.

為了避免此項(xiàng)疑慮欧美三级电影限制黄色福利视频，因此改用含硫磷酸的化學(xué)方法來探討可能修復(fù)路徑超碰在线视屏观看。

An algorithm is developed for simulating stripping tower of sour water.

開發(fā)了含硫酸性污水汽提塔的模擬算法www.MADOUav.com。

This paper studied the catalytic transformation performances of hydrocarbon model compounds (such as n-Hexane,cyclohexane,1-Hexene) and sulfur-containing model compounds (such as thiophene,3-methylthiophene and benzothiophene) on ZSM-5 catalysts.

以正己烷、環(huán)己烷欧美三级A、1-己烯3種烴類和噻吩欧美男女a片、3-甲基噻吩和苯并噻吩三種硫化物為模型化合物，考察了烴及含硫模型化合物在ZSM-5分子篩催化劑上的催化轉(zhuǎn)化性能国产三级伦视频。

Key Word petrochemical industry , refining-chemical integration ,olefine ,sythetic gas ,alkane activation ,separation ,reaction ,biochemlcal ,nanotechnology , informatiom technology

煉油廠的汽柴油規(guī)范將進(jìn)一步強(qiáng)化美女裸体无遮挡久久久精品，歐盟汽油含硫?qū)?000年150PPm減小到2005年50PPm、2011年10PPm加勒比无码HEZYO，芳烴含量將從2000年42%減小到2005年35%www.偷，汽油中芳烴將尋求石油化工新用途。

Study on the process of producing sodium percarbonate through byproduct of hydrazine hydrate- caustic sludge

采用一種催化劑亚洲色图欧美日韩，用空氣對(duì)汽油和液化石油氣脫硫精制產(chǎn)生的含硫堿渣進(jìn)行氧化脫硫處理欧美中文自拍另类。

The compounds which contain sulfur in the residual oil were oxidized into sulphone and sulphoxide, which were extraced by using the DMF as the extraction agent.

渣油中的含硫化合物被氧化成砜和亞砜，用DMF為萃取劑萃取砜和亞砜先锋影音网址。

Effects on inferior resid FCC naphtha quality were discussed by using the test data and the productive data.

運(yùn)用實(shí)驗(yàn)分析數(shù)據(jù)及工業(yè)生產(chǎn)數(shù)據(jù)討論了含硫劣質(zhì)原料對(duì)重油催化裂化汽油質(zhì)量的影響你懂的精品视频。

In well completing test for gas wells of Feixianguan Group with high sulphur content, the well test interpretation can't be conducted until the pressure data are calculated with gas column calculating formula because the distance between the pressure testing point and the central part of the formation is too big.

川東北飛仙關(guān)組高含硫氣藏氣井在完井測(cè)試過程中，壓力測(cè)點(diǎn)位置與產(chǎn)層中部的距離較大人人摸人人操人人爱人人看，需將壓力數(shù)據(jù)用氣柱壓力計(jì)算公式折算后再進(jìn)行試井分析解釋www九一在线视频。