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5?????Q

7???9???,????????,??????????,???????????110??????300?,???

7?5?11?,????,???300mm?(????????,??),????????,?????????

7??????9???????3??????????30????????,???????????????,???????????0.045?????????0.067????????????????????5?????????????????42?????,????????????,???0.093???

?,????????,????????????:

?????????????????,??????7?????622?????????2065??,?,?????????????????????????????????????????;

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