They cast down their load and began to open the grave.
他们把东西卸下来，开始挖坟。
The results show that martensite nodular cast iron has best wear resistance with static load;
结果表明，在静载条件下，马氏体球铁耐磨性最好；
The results show that martensite nodular cast iron has best wear resistance with static load;
结果表明，在静载条件下，马氏体球铁耐磨性最好；
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