四球极压试验机 four-ball extreme pressure tester ; ball extreme pressure tester 球压试验装置 ball press tester ; Ball Pressure Test Device 塑料球压痕硬度试验计 plastics ...
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Their antiwear and extreme pressure properties in rapeseed oil and water were tested on the four-ball tester.
通过四球试验机考察了它们在菜籽油和水中的抗磨性能与极压性能。
Their anti-wear and extreme pressure properties in rapeseed base oil and mineral base oil were tested on the four-ball tester.
通过四球试验机考察了它们在菜籽油和矿物油中的抗磨性能与极压性能；
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