Based on the experiment of flocculation setting for hydraulic coal mining screen underflow primary slime and floatation gangue at Daoqing coal preparation plant, the influence of pH on flocculating effect of coal slurry was reviewed.

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Coast zone is the sensitive belt of environment change. Under the influence both of nature and human being, the problem of resource and environment of coast zone is standing out increasingly.

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The method was applied to measure the hydraulic losses of inlet and outlet conduit of bulb tubular pump system of the pumping station respectively.

采用本文的方法對(duì)某泵站前置燈泡和后置燈泡貫流泵的進(jìn)、出水流道分別進(jìn)行了模型試驗(yàn)亚洲无码啪啪啪网站，測(cè)試了流道水力損失精品美乳日韩视频。

The method was applied to measure the hydraulic losses of inlet and outlet conduit of bulb tubular pump system of the pumping station re.

采用本文的方法對(duì)某泵站前置燈泡和后置燈泡貫流泵的進(jìn)、出水流道分別進(jìn)行了模型試驗(yàn)www.A片欧美视频，測(cè)試了流道水力損失18禁无码久久精品中文字幕乱码。

According to the idea of diversification in studying hydraulic performance of low head pump system, a new method to separate outlet conduit from the pump system is presented to simulate its flow pattern and calculate its hydraulic loss.

根據(jù)研究低揚(yáng)程泵站水泵裝置的方法可以多樣化的觀念，提出了將出水流道從水泵裝置中分離出來亚洲日韩久久久久精品影，進(jìn)行出水流道內(nèi)部流態(tài)數(shù)值模擬和水力損失計(jì)算的方法黄色网站在线观看的。

The hydraulic loss of conduit in both vertical pump system and bulb tubular pump system were calculated using the numerical simulation, and the influence of pump impeller diameter on hydraulic loss of conduit was analyzed. Based on the similitude rules of impeller pump, the relationship between pump impeller diameter and nD value and the influence of pump selection and design were analyzed.

采用數(shù)值計(jì)算的方法，分別計(jì)算了具有不同水泵葉輪直徑的立式軸流泵裝置和燈泡貫流泵裝置的流道水力損失66J8在线视频免费看，比較了水泵葉輪直徑對(duì)流道水力損失的影響日韩精品国语在线观看视频免费；根據(jù)葉片泵的相似律，分析了在一定設(shè)計(jì)流量條件下水泵葉輪直徑與nD值的關(guān)系以及對(duì)水泵選型設(shè)計(jì)的影響亚洲爱爱视频。

Based on copper plastic processing features, the metal rolling theory and the practical procedure, the paper presents the design method of the copper bar rolling mill pass system and the calculation methods of the factors. Some key factors, such as the elongation factor and filling metal degree through the pass system at every rolling segment, and some dynamic factors are calculated for small and middle copper bar rolling mills.

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The result of SSRT showed that the tensile strength in fusion zone of LBW weldment is higher than base metal, and the IGC in weld decay zone did not crack because of the stretch;IGC in fusion zone of GTAW weldment leads to early fracture, and the IGC in weld decay zone clearly stretched and cause the material to crack. Intergranular stress corrosion cracking in this section is still possible.

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In order to conduct optimized signal control at roundabout and improve the service level, two methods of signal design for cross roundabouts are compared, one is the multi-approach going combined with circulating road control, the other is each phase for entrance. After the.

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