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 䓷ӳιˇ:h(hun)䓺ڽٵă(ni)ҲкԓO(sh)䣨O(sh)ʩMзoǣ̎ںƭh(hun)䓷oǰҪٻţM̎ڻ۹þāʹD(zhun)̎ʰ돽5-10mmҪ4Сr(ni)Ϳϵű溬6%ᡣ̎Ǵһíh(hun)֬ᣬͿ1-2ÿκȼs0.1mmaƽ̻24СrԼɰƽN  3N(j)|(zh)|(zh)xòϵȲNɷ֞飺g෨ÿNһӲM̻24СrāƽNһֱ֮gӞ30-50mmں͵֮gĴӞ200-300mmӽӽӿpҪe_һǶe1/2e1/3Če1/4p(yng)دB  4̻꣬48СraüȻ0.2mm ā܌zճ֕rˢzɌzs 0.1-0.2mm |