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- steel ball percussion device 球体冲击器
- In many medium-hard rock stratums,carbide alloy bit and steel ball percussion tools can be used together for higher ROP and better coring result with borehole deflection preventing. 在大量遇到的中硬岩层中采用硬质合金钻头+球体冲击器实现回转冲击钻进可明显提高机械钻速和取心效果,并防止孔斜,具有很好的推广前景。
- Structure Analyzing and Test Result of Steel Ball Percussion Tools Used for Rotary Pecussion Drilling 用于回转冲击钻进的钢球冲击器结构分析及其试验效果
- STUDY ON NEW TECHNOLOGY OF WATER-SAVING DRILLING AND STEEL BALL PERCUSSION TOOLS 节水钻探新技术及球体冲击器研究
- steel ball percussion tools 球体冲击器
- Nitrogen Atmosphere in Bearing Steel Ball H, T. 氮基保护气氛中轴承钢球的热处理
- Develops a new kind of ultrasonic percussion device used for postwelding treatment. 研制了一种新型用于焊后处理的超声波冲击装置。
- Methods Using experimental rat brain model injured by fluid percussion device, contents of Evans blue and brain water in cerebral tissue were assayed,in the meantime the rat neurological behavior was observed. ? 方法 应用流体冲击装置致大鼠脑损伤 ,通过对大鼠脑组织中伊文氏蓝 (EvansBlue ,EB)含量、脑组织内百分水含量、神经功能改变等的观测 ,探讨菲尼酮对大鼠创伤性脑损伤的影响。
- A steel ball. 一个钢球
- The penetrate limit velocity of LY12 aluminum plate which is impacted by steel ball is studied by MSC. Dytran program. 利用工程有限元软件msc.;Dytran;对钢球冲击LY12铝合金靶板时的击穿极限速度进行了数值模拟研究。
- Therefore, NIBCO cannot certify that our carbon and stainless steel ball valves are100% silicone free. 因此,美国尼伯科无法提供我们的碳钢和不锈钢球阀100%25有硅酮的证书。
- Miniature stainless steel ball bearings, stainless steel flanged ball bearings, ceramic ball bearings. 不銹钢微型球轴承、不銹钢微型法兰轴承,陶瓷球轴承。
- Cast bronze body and end piece, blowout proof silicon bronze stem or 316 stainless steel ball and stem are optional (66 Trim). 铸青铜阀体和连接端口,防吹出硅青铜阀杆或316不锈钢球体和阀杆为选配件(66阀内件)。
- The live storage strength increases above 60%,the steel ball consumption drops about 40%. 处理量增加60%25以上,钢球消耗下降40%25左右。
- A steel ball slowly sinks down into a chrome tube and then rises back up like magic, then both objects solidify into a solid piece of metal! 一个钢球慢慢地下沉至一支铭黄管,然后上升起来,之后两者变成一个金属固体。
- In 1934 the scientist William Beebe dived 3,000 feet below the surface in a hollow steel ball. 1934年一位名叫威廉.;毕布的科学家乘坐一个空心的钢球,潜入海面以下3
- It's applicable for vibration cleaing for steel ball and also for cleaning and defatting for aluminum alloy. 适用振动清洗钢球,亦适用铝合金的清洗脱脂。
- Experiment proved that the detecting results indicated the performance of percussive device completely.It isimportant to research and modify the structure of percussive devi... 实验证明,用这套系统测出的结果比较准确地反映了冲击器的性能特点,对于研究和改进冲击器的结构具有指导意义,同时为研究冲击破岩机理提供了可靠的实验数据。
- Soft as cotton, it renders a steel ball bouncing high from the ground paralyzed in its embrace. 棉花称得上温柔了吧,蹦得再高的钢球一落到上面,就此弹不起来了;
- Building valves - Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings - Tests and requirements. 建筑物用阀。建筑物内饮用水给水用手动铜合金和不锈钢球阀。试验和要求。