The tribological properties and the anti-wear of micron coppers inside greases were investigated by four-ball test.

通过四球试验，考察了软金属微米铜粉在润滑脂中的摩擦学行为和抗磨性。

youdao

The tribological properties and the anti-wear of micron coppers inside greases were investigated by four-ball test.

通过四球试验，考察了微米铜粉在润滑脂中的摩擦学行为和抗磨性。

youdao

The tribological properties and the anti-wear of micron copper powder in greases are investigated by four-ball test.

通过四球试验 ，考察了软金属微米铜粉在润滑脂中的摩擦学行为和抗磨性。

youdao

McIntosh struck a six and 10 fours during his four-and-a-half-hour innings but missed out on a second Test hundred when he edged a ball from Hauritz to Simon Katich shortly before the umpires offered the light.

BBC: Australia poised for Test victory in New Zealand

There were some good balls, and conditions in this series have not been conducive to swatting the ball around, so there are one or two mitigating circumstances, but we should not be playing four-day Test matches.

BBC: Jonathan Agnew column