连硫酸

To restore the ability of chromium can be dissolved in sulfuric acid, hydrochloric acid and High-FE acid and release hydrogen, but also of pure chromium with aqua regia does not work, when there is the presence of halogen ions in the acid can not be long-term stability, high temperature with alkali, hydrogen sulfide, sulfur steam, phosphorus, ammonia, such as carbon monoxide and water vapor reaction of the corresponding compounds, in the high temperature reaction of silicon into the silicide also chromium, chromium alloys with many metals generate a wide range of industrial applications, such as chromium-manganese stainless steel is used extensively for chemical plants.

铬的还原能力强，能溶于硫酸、盐酸和高FE氯酸而放出氢气，但纯铬连王水也不起作用，当有卤素离子存在时，在酸中不能长期稳定，高温时能与强碱、硫化氢、硫蒸汽、磷、氨、一氧化碳和水蒸汽等反应生成对应的化合物，在高温下还能与硅反应成硅化铬，铬能与许多金属生成合金广泛在工业上应用，如铬锰不锈钢大量用于化工设备。

The reason of cracking in elbow of the hot hi-pressure segregator oil P3327 pipeline in the hydrocracking unit was analyzed and a method to prevent from polythionic acid corrosion was provided.

对国产加氢裂化热高分油管线的弯头开裂原因进行了分析，并对预防连多硫酸腐蚀提出了相应的防范措

Taking some azotic acid, he mixed it with glycerine, which had beenpreviously concentrated by evaporation, subjected to the water-bath, and heobtained, without even employing a refrigerant mixture, several pints of anoily yellow mixture.

他事先用蒸发的方法浓缩了甘油，现在他就用一只水槽把少量的硝酸和甘油混合在一起。于是，连冷却剂也不用，就得到好几品脱的黄色混合油液。是把硫酸铁的结晶密封在瓶子里，进行锻烧。

Methods The Wistar rats were used as the experimental animal. On the back of each rat, a skin flap, measuring 1.5 cm×6 cm, caudally based, was elevated. Wound edges and the flap bed were separated from the flap itself by a silicone sheet. The VitC, bFGF, Magnesium sulfate and Papaverine were taken in the areas between flap and sheet. With 8 rats in each group, the drug-taken group was as trial group, while the physiological saline group was as control group. On the seventh day after the flap elevation, flap survival length was measured.

以鼠背部中线为中轴，以两侧髂嵴连线为蒂，形成一个1.5cm×6cm的单蒂皮瓣，其全长自皮肌层下与深筋膜游离，下垫置医用硅膜，硅膜以不露出切口，又起到阻隔真皮血运为宜，以小三角针用3-0丝线先缝合皮瓣两侧切口，然后将上述4种药物加入皮瓣与硅膜之间，再缝合皮瓣的头端将维生素C、bFGF、硫酸镁、罂粟碱分别作为实验组，以生理盐水作为空白对照组，每组8只动物，术后单笼喂养7d，取材并检测皮瓣存活的长度。

In the hope of helping innovative formulators contemplating the use of novel electrolytes like dithionic acid , this paper presents a brief summary of some recent developments in dithionate based electroplating.

在电镀溶液中使用连二硫酸和连二硫酸金属盐作为可溶性金属离子和电解质的来源具有潜在的应用。

The examination and analysis reveal that the cracking of the plates is the result of stress corrosion cracking caused by polythionic acid .

通过对隔板的检查和分析，判断隔板断裂属于连多硫酸引起的应力腐蚀开裂。

Stress Corrosion Cracking of polythionic acids of 304 SS were investigated by SSRT,SEM and metallographic analysis.

采用慢应变速率拉伸试验、扫描电镜断口分析以及金相显微组织分析等方法对304不锈钢连多硫酸应力腐蚀开裂行为进行了研究。

With increasing number of hot-wall hydroprocessing reactors and extension of service time, the occurrence of polythionic acid corrosion, hydrogen induced spalling of weld overlay, temper embrittlement of base metal, hydrogen embrittlement and surface cracking etc.

随着国产热壁加氢反应器的数量不断增加和服役时间的延长，连多硫酸腐蚀、堆焊层氢致剥离、母材回火脆化、氢脆、表面开裂等时效损伤出现的情况越来越多。

The observation of the metallographic structure of the cracks and analysis of the corrosion product determines that culprit of the cracking is polythionic acid stress corrosion.

中国石化股份有限公司天津分公司加氢精制高压分离器接管使用8个月后相继发生开裂，经裂纹金相组织形态观察和腐蚀产物成分分析，确定开裂原因系连多硫酸应力腐蚀引起。

Bellows premature failure often occurs in engineering application due to polythionic acids stress corrosion cracking or due to high-temperature oxidation and sulphidation Failure with development of catalyse and cracking process technology of heavy oil.

随着重油催化裂化技术的发展，波纹管在实际工程应用中经常发生连多硫酸应力腐蚀、高温硫化-氧化腐蚀失效。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。