The results indicate that malachite [CuCO3Cu 2] is the main substance of green corrosion product; azurite [2CuCO3Cu 2] is the main substance of blue corrosion product and paratacamite [Cu2 3Cl] is the main substance of slightly green corrosion product.

結(jié)果表明国产v在线在线观看视频免费、一，九連墩楚墓出土的青銅器上主要的銹蝕產(chǎn)物為孔雀石[CuCO3Cu2]最新狼友网址，存在部分藍(lán)銅礦[2CuCO3Cu2]和少許副氯銅礦[Cu23Cl]；此批青銅器銹蝕情況比較復(fù)雜A级毛片免费观，銹蝕種類比較豐富国产尤物视频在线。

Stem corrosion problem is to be paid more attention to the problem of accumulated rich production experience, often by nitriding, boride, chromium, nickel and other surface treatment to improve its corrosion resistance, corrosion resistance and wear abrasion performance.

閥桿防腐問題是被人們所重視的問題，積累了豐富的生產(chǎn)經(jīng)驗(yàn)国产在线精品99一区，常采用滲氮新久久黄色视频、滲硼、鍍鉻欧美喷水网站一级a片、鍍鎳等表面處理工藝毛毛黄色A片，提高它的耐蝕性，氣動(dòng)控制閥耐蝕性和耐磨擦傷性能欧美黄色插插。

The size description method is studied on corrosion pits of steel bar in R. C. member by macro battery corrosion, a two dimension model of macro battery corrosion pits size of steel bar in R. C. member is presented in this paper.

本文對(duì)混凝土中的鋼筋經(jīng)受宏電池銹蝕并因此產(chǎn)生局部銹坑的描述方法進(jìn)行了研究，提出了鋼筋宏電池腐蝕銹坑尺寸的二維模型天天舔。

By adding YJ-504 corrosion inhibiting composite concrete additive and adopting the match technique of slag powder and fly ash,the high performance concrete shows excellent properties of low Cl-diffusion coefficient and freeze-thaw cycles ;The property of corrosion inhibition on steel of YJ-504 corrosion inhibiting additive satisfies completely the demands of related standard.

采用YJ-504復(fù)合型混凝土防腐阻銹劑人妻AV无码系列专区移动可看，輔之以礦渣粉和粉煤灰雙摻技術(shù)配制的高性能混凝土18禁黄网站禁片无遮挡，表現(xiàn)出優(yōu)異的抗氯離子擴(kuò)散、抗凍融循環(huán)破壞性能在线资源av网站；YJ-504復(fù)合型混凝土防腐阻銹劑的阻銹性能完全滿足相關(guān)標(biāo)準(zhǔn)規(guī)定要求永久黄网站色视频免费大全91。

This paper analyzes the investigation results about the internal oxidative corrosion in over 100 fire-tube package boilers and water tube boilers with drums,as well as the causes of the corrosion.Some practical corrosion preventive measures in operation management and deaeration are recommended.

本文對(duì)一百多臺(tái)煙火管快裝爐和帶鍋筒水管鍋爐內(nèi)部氧腐蝕情況的調(diào)查結(jié)果進(jìn)行了分析，分析了產(chǎn)生氧腐蝕的原因欧美日韩一级特黄大片在线直播，從運(yùn)行管理和采取除氧措施等方面提出了實(shí)用的防氧腐蝕的建議青青青草视。

Corrosion film is the determinative factor for corrosion rate and corrosion pattern.

而腐蝕產(chǎn)物膜是腐蝕速率和腐蝕形態(tài)的決定因素。

The kinetics of crevice corrosion and water-line corrosion of these metals and the effects of inhibitors on crevice corrosion and water-line corrosion were studied.

研究了這些金屬的縫隙腐蝕和水線腐蝕的機(jī)理超碰在人人操，以及添加緩蝕劑對(duì)縫隙腐蝕和水線腐蝕的影響精品在线精品视频。

In the present work, based on the mechanism of low - temperature corrosion, an opinion was presented by theoretical analysis and computation, that is the vacuum boiler can not avoid being corroded completely under low temperature, but the corrosion is very weak no matter if the exhaust gas temperature is higher than the flue gas dew point; it was obtained the relationship between the corrosion velocity of metal wall and wall temperature along gas pass of vacuum boiler, and the one between the corrosion velocity of metal wall and wall temperature under the condition that the flue gas temperature is lower than the acid dew point.

文章從鍋爐發(fā)生低溫腐蝕的機(jī)理人手，通過理論分析計(jì)算并通過實(shí)踐檢驗(yàn)99久久免费看,视频，提出了真空相變鍋爐雖然不能完全避免低溫腐蝕問題黄色高清无码在线，但不論排煙溫度是否高于煙氣露點(diǎn)，低溫腐蝕的程度都很弱的觀點(diǎn)中文字幕在线更新资源站；給出了真空相變鍋爐沿?zé)煔饬鞒探饘俦诿娴母g速度與壁面溫度的關(guān)系曲線欧洲性爱一级二级网站视频，和煙氣溫度低于酸露點(diǎn)時(shí)金屬壁面的腐蝕速度與壁面溫度的關(guān)系曲線；同時(shí)人人操人人草色，文章推薦真空相變鍋爐的設(shè)計(jì)排煙溫度取130℃左右的低排煙溫度午夜熟女毛片。

In the present work, based on the mechanism of low-temperature corrosion, an opinion was presented by theoretical analysis and computation, that is the vacuum boiler can not avoid being corroded completely under low temperature, but the corrosion is very weak no matter if the exhaust gas temperature is higher than the flue gas dew point; it was obtained the relationship between the corrosion velocity of metal wall and wall temperature along gas pass of vacuum boiler, and the one between the corrosion velocity of metal wall and wall temperature under the condition that the flue gas temperature is lower than the acid dew point.

本文從鍋爐發(fā)生低溫腐蝕的機(jī)理入手，通過理論分析計(jì)算并通過實(shí)踐檢驗(yàn)黄av在线日韩，提出了真空相變鍋爐雖然不能完全避免低溫腐蝕問題曰韩视频第一页，但不論排煙溫度是否高于煙氣露點(diǎn)，低溫腐蝕的程度都很弱的觀點(diǎn)免费看操逼黄片av；給出了真空相變鍋爐沿?zé)煔饬鞒探饘俦诿娴母g速度與壁面溫度的關(guān)系曲線亚洲欧美啊啊啊啊久久久，和煙氣溫度低于酸露點(diǎn)時(shí)金屬壁面的腐蝕速度與壁面溫度的關(guān)系曲線；筆者專門從事真空相變鍋爐的設(shè)計(jì)研究已十多年亚洲一区二区视频在线免费视频，根據(jù)上述觀點(diǎn)設(shè)計(jì)的數(shù)百臺(tái)產(chǎn)品已經(jīng)過多年實(shí)際運(yùn)行欧美操屄，未發(fā)現(xiàn)明顯低溫腐蝕。

Through studying mechanism of drilling string failure in the action of interaction of cyclicstresses and corrosion, we find fracture source is accord with pitting corrosion inside surface ofdrilling string, crack from pitting corrosion lead to drilling string failure, the process of drillingstring failure is new drilling string → corrosion pit forming and crack initiation → corrosionfatigue crack propagation→piercement or fracture.

通過研究在鉆柱交變應(yīng)力和腐蝕的交互作用下的機(jī)理發(fā)現(xiàn)在线观看国产美乳视频，腐蝕疲勞裂紋源與鉆桿內(nèi)壁蝕坑對(duì)應(yīng)外国熟妇性交，蝕坑萌生裂紋造成鉆柱失效，鉆柱腐蝕疲勞破壞過程歸結(jié)為：新鉆桿—蝕坑形成及裂紋萌生—裂紋擴(kuò)展—刺穿和斷裂国产精品亚韩精品无码a在线观看。