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- 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
- steel ball percussion device 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
- The use of caseless propellant charges as the power source for projectiles and for explosive percussion tools such as nailguns is now established. 目前,用无壳药柱作为弹丸及火药推进器(如铆钉枪)的能源已是被认定的。
- 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)。
- A Mathematic Model of Hydraulic Percussion Tool 液动射流式冲击器工作数学模型建立
- 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。
- 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;
- Applications of Hydraulic Percussion Tool in Chuanhe 148 Well 液动冲击器在川合148井的应用
- 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。