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?????????DN D1 D2 D3 D4 L b ? K????????
...??????????DN???????? ???D1????D2????D3????D4?????L????b?????????K????? ???????????????????????????????????????? (?)???????????...
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???dn dl tl???????????? - ??
...?tn dn????????t????????????????n?????????????????????dn???tl dl????????????????????????t d ??????????????l???????????????????????????????????~ ?? ......
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??????????? 24-70mm F2.8 DG DN | Art ???
...?? ????24-70mm F2.8 DG DN?????????????????????????????????????????????????????Lock???????????????????????????????????????????...
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?????????DN PN ??????????_????
...??????????????DN?PN????????? ????????PN?DN??? ???? ??PN?DN????????????????????????????????????????????????????N?X,Y?????A,B??????PN??PLOT NORTH?DN??CONSTRUCT NROTH....
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???DN dn ?????? ?????????????????DN?????dn????????????
...DN dn?????????DN??????? dn????????????? ????????????? ???? GBT50106-2010 DN?dn???????dn???????DN???????????????...
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hdpe????? ??DN/ID225 SN4 ????_????
...DN??=De??-0.5*????? ??????????????? ??????????????DN ?????????????????????? ??DN?????????????DN ??????????????DN/OD ?DN/ID? ???hdpe??????????...
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DN??????? - ????
...DN????????????????????????????DN-?????????? DN10??14mm?DN15??18mm?DN20??25mm?DN25??32mm?DN32??38mm?DN40??45mm?DN50??57mm?DN65?...
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???????Dn???????? - ??
...????????????????? ???????2n? ???? ??? ????? 1. ??n??f?????????????????f?????????? ????? (1,2,?,n)^ (n/f). 2. ?? ?????? {id}????????? 3. ?n????????1?2?????????????? ......
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dn?DN?de?De??????????? - ??
...dn?DN?de?De??????????? ???????????????????????dn??????????De??????????????????????????????????????? ???? ??? 27...
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??DN?De?dn?D?d????? - ????
...??DN?De?dn?D?d?????1?DN?De????1?????DN??????????De?????????2???????DN?????De??????3???????DN???????????De????????4...
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Åby Åbyggeby Åbytorp Åhus Åkarp Åkers styckebruk Åkersberga Ålberga Åled Ålem Åmmeberg Åmot Åmotfors Åmsele Åmynnet Åmål Ånge Ånäset Åre Årjäng Årstad Årsunda Åryd Ås Åsa Åsarne Åsarp Åsbro Åsby Åseda Åsele Åselstad Åsen Åsenhöga Åsensbruk Åshammar Åsljunga Åstol Åstorp Åtorp Åtvidaberg