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- To reach base safely on(a bunt or ground ball). 安全上垒使（短打或地滚球）成为安打
- Taylor hit a ground ball to the shortstop. 泰勒朝游击手击出一滚地球。
- A ground ball hit in such a way that it bounces. 尚未入内野就击的触地球
- This paper introduces a way suitable for grinding ball globoidworm, and a design for the corresponding grinding device. 本文介绍了一种适合环面滚珠蜗杆的磨削方法以及设计出的相应的磨削装置。
- The Cr/C ratio and Si must be controlled strictly to produce Cr-V-Ti troostite grinding ball. 生产铬钒钛屈氏体磨球要严格控制 Cr/C 比和元素 Si.
- Brake disc for subway, Brake drum a Transmission case a Manifold exhaust for car Valve body, wear-resistant castings, Grinding ball, etc. 火车刹车盘,轿车刹车鼓,变速箱体,排气管阀体,耐磨铸件,磨球。消失模铸造成套技术设备。
- Using tungstenic slag as alloying additive,a sort of W,Mn ,Nb , Ta containing cast iron wear-resistant grinding ball was developed. 用钨渣作为合金添加剂,研究出含W、Mn、Nb、Ta的合金铸铁磨球。
- In order to improve the micro-structure and the mechanical properties of the nodular iron grinding ball, some control aspects have been presented. 对凝固过程中结晶组织变异的原因进行了分析，提出了改善球铁磨球的显微组织及机械性能的控制措施。
- The non-equilibrium crystallizing processes and the characteristics of the metal mould nodular iron grinding ball have been discussed in this paper. 摘要用彩色金相法分析研究了金属型球铁磨球非平衡凝固过程和特性。
- Variation and failure of the grinding ball of high chromium white cast iron during production and service are mainly caused by the internal stress. 内应力是造成高铬白口铸铁磨球在生产和服役过程中出现变异和失效的主要原因。
- In the production of low chrome cast iron grinding ball, there has been existing lower longevity and instability properties. 在低铬铸铁磨球生产上,一直存在磨球介质的使用寿命不高,性能不稳定。
- Grinding ball of spheroidal graphite cast iron with martensitic matrix was usually produced by reheating and quenching after casting. 马氏体基球墨铸铁磨球一般采用砂型(或金属型)铸造成形后,再重新加热进行淬火。
- He booted several easy ground balls. 他防守几个容易的滚地球失误。
- The modern advanced metallurgy casting, management and information are important content of modern scale production of high chrome white cast iron grinding ball. 现代先进的冶金铸造技术、现代管理和信息技术是更好地实现高铬白口铸铁磨球的现代规模化生产的重要内容。
- Using the process of the EPC low carbon ductile iron grinding ball was intrduced,the quasi-casting bainitic grinding ball is got under the industrial condition. 用所介绍的消失模工艺铸造低碳球铁磨球,在工业条件下可获得准铸态贝氏体组织磨球。
- Using local resource, the microalloy multi-element high chrome cast iron grinding ball is developed, which has excellent employment result in practical application. 利用地方资源开发研制并生产了微合金化多元高铬铸铁磨球,在实际应用中收到了优异的使用效果。
- By comparing to the traditional technology,grinding ball manufactured by the new technology is characterized by better tenacity,stronger hardness,and smaller stress. 与传统工艺相比,新工艺制造的磨球韧性好、硬度高、应力小,球的使用寿命和适应工况能力显著提高。
- The results of application in a cement plant show that the cost of the ball can be reduced by 18% than the low chrome alloy grinding ball's,the wearing value of grinding ball of each ton by 80%,the broken rate of grinding ball by 50%. 通过在水泥厂应用,结果表明:磨球的成本可比低铬合金铸铁磨球降低18%25,磨球的吨水泥磨耗降低80%25,破球率降低一半。
- The non-equilibrium crystallizing processes of the metal mould nodular iron ball were investigated through analyzing the properties and microstructures of the nodular iron grinding ball. 通过分析不同成分球铁磨球零件性能和金相组织,对金属型磨球的非平衡凝固特性进行了较深入的研究。
- The new grinding machine passed all tests. 这台新磨床通过了所有的试验。
