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)果表明中文字幕av免费专区久久，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]羞羞视频在线观看入口页面，存在部分藍(lán)銅礦[2CuCO3Cu2]和少許副氯銅礦[Cu23Cl]国产一级A片免费观看com；此批青銅器銹蝕情況比較復(fù)雜嗯啊～嗯啊使劲视频在线观看，銹蝕種類(lèi)比較豐富www.中文字幕在线播放。

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(wèn)題是被人們所重視的問(wèn)題在线免费看黄色乱视频，積累了豐富的生產(chǎn)經(jīng)驗(yàn)，常采用滲氮亚洲中文经典三级片在线视频、滲硼欧美色最新精品视频在线播放、鍍鉻日本欧美韩国欧洲亚洲女性、鍍鎳等表面處理工藝，提高它的耐蝕性亚洲色图你懂，氣動(dòng)控制閥耐蝕性和耐磨擦傷性能韩国A级黄色电影。

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精品国产AV第二页。

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www.dxj久久av，輔之以礦渣粉和粉煤灰雙摻技術(shù)配制的高性能混凝土，表現(xiàn)出優(yōu)異的抗氯離子擴(kuò)散三级毛片视频、抗凍融循環(huán)破壞性能一级二级毛片免费看不卡；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。

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)行了分析人人摸人人操，分析了產(chǎn)生氧腐蝕的原因亚洲综合黄网，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。

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99国内精品人人操。

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)理精品资源在线，以及添加緩蝕劑對(duì)縫隙腐蝕和水線腐蝕的影響。

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)理人手无码小视频在线观看，通過(guò)理論分析計(jì)算并通過(guò)實(shí)踐檢驗(yàn)人人干人人插人人插人人操，提出了真空相變鍋爐雖然不能完全避免低溫腐蝕問(wèn)題，但不論排煙溫度是否高于煙氣露點(diǎn)26uuu色噜噜在线播放，低溫腐蝕的程度都很弱的觀點(diǎn)亚洲国产成a人v在线观看；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，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)系曲線一本久道在线无码；同時(shí)中文成人精品字幕在线视频观看免费，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。

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)理入手裸模AT国产精品视频，通過(guò)理論分析計(jì)算并通過(guò)實(shí)踐檢驗(yàn)老师在办公室被躁在线直播，提出了真空相變鍋爐雖然不能完全避免低溫腐蝕問(wèn)題，但不論排煙溫度是否高于煙氣露點(diǎn)外国A级免费毛片，低溫腐蝕的程度都很弱的觀點(diǎn)男人天堂网址在线；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，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99精品黄色一级电影；筆者專門(mén)從事真空相變鍋爐的設(shè)計(jì)研究已十多年高清一级做a爱过程免费，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(guò)多年實(shí)際運(yùn)行，未發(fā)現(xiàn)明顯低溫腐蝕永久免费精品影视网站播放器。

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(guò)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)亚洲一区精品无码色，腐蝕疲勞裂紋源與鉆桿內(nèi)壁蝕坑對(duì)應(yīng)，蝕坑萌生裂紋造成鉆柱失效影音先锋av综合资源，鉆柱腐蝕疲勞破壞過(guò)程歸結(jié)為：新鉆桿—蝕坑形成及裂紋萌生—裂紋擴(kuò)展—刺穿和斷裂欧美黄页在线观看。