“four-ball test machine”的概念、定义、翻译、参考文献-科学参考

单词	four-ball test machine
释义	four-ball test machine Encyclopedia 工学摩擦学试验释 four-ball test machine四球试验机以一个钢球在压力作用下，相对三个同尺寸水平固定钢球旋转摩擦的摩擦试验机。简称四球机。
随便看	Hour star hour system House house house church house curtain house fly House for the Six Maladies house garden house garden in Beijing house graph household household apparel household-based heat metering household-based heat meter measurement household-based land tenure and tax system household biogas digester household consumption expenditure household contract operating system household contract responsibility system household contribution compensation Household degree be divided in ancient time of china for the taxation household disposable income household enjoying the five guarantees Householder

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。