... Brinell impact hardne tester 锤击式布氏硬度试验机 impact-toughness tester 冲击韧性试验机 fibre impact tester 纤维冲击试验机 ...
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对刮痕强度试验机进行适当的改进，就可测量芯砂的冲击韧性，并使一机两用。
The scratch strength tester has been improved in the paper, which can measure the impact toughness and has two uses.
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