The assembly of journal and plain bearing liner space is too little, force of organic still oil pressure is small it is the crucial index that affects lubricant result, make lubricate because of lacking engine oil between crankshaft and plain bearing liner and bite dead invalidation, include to be pulled badly, lack lube, layer of alloy of dry attrition generation is fused, grind sliding surface to did not maintain the oily film of certain ply, and all sorts of local overload exhaustion are destroyed, cavitation erosion and V form are destroyed etc, through technology of him director diesel locomotive old experience reachs the analysis of pair of its breakdown reasons, put forward precautionary measures especially. As a result of,the burns caustic mechanism plain bearing liner to burn caustic mechanism of 1 plain bearing liner is the lube film burst between journal and plain bearing liner, cause plain bearing liner and crankshaft generation clash, below high temperature, high pressure and high rotate speed, the wear-resisting alloy layer of plain bearing liner wears away prematurely or fuse, cause plain bearing liner and crankshaft to stick thereby bite, can make the steel back of plain bearing liner and Kong Zhong produces whirligig, inlet port is jammed, carry on the back by steel again with the friction of aperture causes high temperature to make plain bearing liner burned-out further, can cause bolt to break off, happen swing a malign accident that pounds cylinder body of bad internal-combustion engine.

軸頸和軸瓦的裝配間隙太小，還有機油壓力低是影響潤滑效果的關(guān)鍵指標可以直接在线观看黄网站免费，使得曲軸和軸瓦之間因缺少機油潤滑而咬死失效免直接观看的在线黄色网站，包括嚴重拉傷，缺少潤滑油美女裸体日韩成人网站视频在线观看，干摩擦產(chǎn)生合金層熔化美女在线被干观看国产，磨滑面沒有保持一定厚度的油膜，以及各種局部過載疲憊破壞免费在线观看黄片AV，氣蝕和V形破壞等欧美一级a免费，通過本人主管內(nèi)燃機車技術(shù)多年經(jīng)驗及對其故障原因的分析，特提出預防辦法久久久久久久91久久久。1軸瓦的燒損機理軸瓦燒損的機理是由于軸頸和軸瓦之間的潤滑油膜破裂三级黄视频一区二区三，導致軸瓦和曲軸產(chǎn)生摩擦，在高溫日批视频网站免费看、高壓和高轉(zhuǎn)速下欧欧美一级α爰高清成在线看，軸瓦的耐磨合金層過早地磨損或熔化，從而引起軸瓦和曲軸粘咬91p0rn九色丰满熟女，會使軸瓦的鋼背和座孔中產(chǎn)生旋轉(zhuǎn)運動毛片基地在线观看视频，進油孔被堵塞，再由鋼背和座孔的磨擦進一步引起高溫使軸瓦燒壞一级aa毛片免费高潮视频2020，并會造成螺栓折斷国产午夜精品免费99，發(fā)生甩出搗壞內(nèi)燃機缸體的惡性事故。

An 1-D sediment mathematic model is developed in the second part. Techniques are suggested for some problems in calculations, such as the effective suspended load carrying capacity of the different bed material reach, the coefficient of suspended load carrying capacity, the recovering coefficient of the carrying capacity, the thickness of the mixed layer, the transport width of the bedload, bifurcation and confluence of main and branch channel, and the distribution of deposition and erosion along the cross section, etc. The numerical scheme of 1-D model is induced.

第二部分建立了一維泥沙數(shù)學模型99tv无码国产精品，對計算中的幾個關(guān)鍵問題提出了處理方法久久偷窥一级黄片，如不同床沙組成河段的有效挾沙力、挾沙力系數(shù)呦呦色色网、挾沙力的恢復飽和系數(shù)亚洲无线码在线一区观看、床面混合層厚度、推移質(zhì)輸移帶寬度天天色天天爽、干支流入?yún)R及分流問題一级片免费观看、橫斷面沖淤形態(tài)及斷面修正方法，導出了一維模型的差分格式。

Unclean medium - causing serious erosion, to lay a trap, Core Block scratches, impact of movements and sealed.

不干凈介質(zhì)--造成嚴重的沖蝕无码有码日韩制服AV、堵卡亚洲日韩色图10p，芯座劃傷，影響動作和密封日韩人人操人人射。

Secondly,the experimental equipment of electrical life of relay was developed and the arc erosion status of contact s of breaking the inductive load with the four circuits was researched by experiments.

論文首先構(gòu)建了無保護電路和3種有保護電路模型并給出了電弧能量的計算公式性XX18；然后研發(fā)了繼電器電壽命實驗裝置并通過實驗研究了上述4種電路中繼電器開斷感性負載時觸點的電弧侵蝕情況。

Firstly, the models of one unprotected circuit and three protected circuits were built and the formulas of arc energy for each circuit were given in this paper. Secondly, the experimental equipment of electrical life of relay was developed and the arc erosion status of contacts of breaking the inductive load with the four circuits was researched by experiments.

論文首先構(gòu)建了無保護電路和3種有保護電路模型并給出了電弧能量的計算公式国产精选黄色视频免费在线观看；然后研發(fā)了繼電器電壽命實驗裝置并通過實驗研究了上述4種電路中繼電器開斷感性負載時觸點的電弧侵蝕情況。

A correlation between wind erosion intension and wind speed was founded through analyses. Hexagon brick was more effective than arch frame-saw in lowering initial wind speed.

在降低土壤風蝕起始風速單方面亚洲欧美日韩第一区在线观看，六棱磚相比拱形框架梁和機械壓實更有效国产盗摄91精品一区。

The etched concave surface on cross beam is caused by long -time erosion of sewage on the bridge dropping from train.

橋梁上的腐蝕凹面是列車上的污物掉落在橋上長期腐蝕的結(jié)果。

The research results show that grass vegetation,like forest and bush,can effectively control soil erosion.

結(jié)果表明久久国产精品亭亭亚洲Av，草被與森林植被一樣两个人的黄色网站，能有效防止土壤侵蝕。

Grape orchard and bush land have less physical clay fraction, which means easier to suffer soil wind erosion.

耕地表層土壤物理性粘粒含量處于中間水平亚洲免费性爱片一级。

Whether or not emergence projection effect is the sign that the filler can or can not promote erosion resistance of the coating.

而是否出現(xiàn)&投影效應(yīng)&則是填料能否在涂層中起到抗磨作用的標志亚洲a级黄片免费观看。