They had suppressed the cathodic process of carbon steel electrode. Their inhibition performance was also related with their molecule stereo conformation and electron configuration. Four of bis-(1, 1'-benzotriazoly)-α,β-diamide compounds linked via-CO 〓CO-chain were synthesized and certified by IR and 〓H-NMR. The minimum energy conformations of these compounds were obtained by MM2 forcefield program. The two benzotriazole moiety in BBT1 was more planar than in other compounds. This was beneficial in increasing the inhibition effects of BBT1. In 0.5M H〓SO〓 solution, BBT1 suppressed anodic corrosion reaction. In 3%NaCl solution, BBT1 suppressed both cathodic and anodic corrosion reactions. 1- [ (1'-imidazolly)-methyl] benzotriazole was synthesized by Mannich reaction.

合成了四個(gè)通過(guò)-CO〓CO-連接的雙（1欧美一级黄片久久久久久久，1'-苯并三唑）-αA片不卡视频网站，ω-二酰胺化合物黄色色色色色色色网站，采用MM2分子力學(xué)程序優(yōu)化了它們的分子結(jié)構(gòu)美女羞羞视频网站，雙（1无码精品视频在线观看，1'-苯并三唑）-α热久久精品日本一区二区三区，ω-二酰胺化合物的緩蝕作用與其分子內(nèi)兩個(gè)苯并三唑單元的空間取向有關(guān)系，良好的平面性有利于苯并三唑二聚體的吸附和緩蝕作用日本中文字幕的视频网站，苯并三唑二聚體BBT1分子內(nèi)兩個(gè)苯并三唑單元近似平行亚洲欧美日韩黄频大全，所以顯示出較好的緩蝕效果国产欧美日韩在线综合网。0.5M硫酸中BBT1主要抑制銅的陽(yáng)極溶解的電化學(xué)反應(yīng)；3％NaCl溶液中欧美综合第128页，BBT1對(duì)銅的陽(yáng)極溶解和氧的陰極還原過(guò)程均有抑制作用久久精品视频99，相比較而言對(duì)陰極過(guò)程的抑制作用更大一些。

The effects of operating temperatures(15 ,25, and 35℃) and the initial sludge solubility on the overall digester performance were also examined.

同時(shí)欧美精品网一区二区，也研究了運(yùn)行溫度(15免费A级毛片全免费还看、25和35℃)和初始污泥溶解性(溶解COD與總COD比值)對(duì)消化器性能的影響。

Triphosgene dissolved in dioxane, the hydroxylamine hydrochloride dissolved in potassium acetate solution.

三光氣溶解在二氧六環(huán)中国内精品久久一级，鹽酸羥胺溶解在醋酸鉀溶液中亚洲天堂日韩视频无码。

COD in process wastewater of ephedrine extraction is classified according to its dissolubility.

依據(jù)溶解性對(duì)麻黃堿提取工藝廢水中COD作了分類，該廢水中的COD主要以溶解態(tài)存在并可大量酸

Meanwhile the dissolving velocity of polymer is affected by the temperature of dissolvent,the change of entropy in the system and the surface area to volume ratio of polymer.

而聚合物的溶解時(shí)間又受到溶劑溫度国产亚洲精品美女古装AV、溶解過(guò)程中的混合熵變高清黄色在线视频一区二区、聚合物顆粒比表面積的影響。

Water has the property of dissolving sugar; sugar has the property of being dissolved by water.

水具有溶解糖的性質(zhì)一级片aaa片，而糖具有被水溶解的性質(zhì)免费看美国牲交毛片。

Water has the property of dissolving sugar, sugar the property of being dissolved by water.

水具有溶解糖的特性，糖具有被水溶解的特性黄色AⅤ无码视频。

Water has the property of dissolving sugar, sugarthe property of being dissolved by water.

水具有溶解糖的特性这里只精品视频，糖則具有被水溶解的特性。

According to AAS data, Fe, Ni and Mn in pits dissolved into ions in form of divalence, and Cr in form of trivalence both in the presence and absence of PD.

結(jié)果表明：304不銹鋼蝕孔內(nèi)1024亚洲免费视频，鉻元素以三價(jià)插黄网站，鐵、鎳和錳以二價(jià)離子形式溶解aaaaeee，緩蝕劑PD不改變各元素溶解的價(jià)態(tài)国产一区日韩动图。

In the presence of PD , the dissolution rates of Cr and Ni in 304 matrix decreased obviously, and the molar percentages by which various components in 304 stainless steel dissolved were different from those in the absence of PD. AAS data indicated that regardless of the presence of PD the dissolution of Fe, Ni and Mn took the form of divalence, while Cr dissolved in the form of trivalence.

PD對(duì)304不銹鋼在鹽酸中的腐蝕存在"選擇性抑制"效應(yīng)，能顯著減緩Cr和Ni的溶解99久久蜜v视频，改變各元素溶解的比例www.直接看黄色视频大全清纯，導(dǎo)致耐蝕組分在電極表面富集。