夜色网,色欲aⅴ精品一区二区三区四区,国产精品jizz视频国产y网,欧美精品综合视频一区二区

?????????????????????????μ??????????????????

??÷?Χ
??????????н??????ο?????Ч?????????????????????????????????????
???????
???
?????
7/0.19
j???????
HDPE
о?????
???
???????
??????PVC????
???????
??e????Χ
????2?????????????????????????????????????????Ч????????????????????
??????????????????????????????????е?????????????????????????о?????????????
??????ó????
????????
?????ν???3????????????
???0?2?0?2?0?2 ???????????------????MAYLA??????Σ?
??????------------?????????Σ?
????????---------????MAYLA??????????????Ρ?
????????????????????
?????
???0?2?0?2?0?2?0?2?0?2 ?壺 ?????????????????????VDE0295CLASS 5???
???0?2?0?2?0?2?0?2?0?2 ??? ??????PVC???
??0?2?0?2?0?2?0?2?0?2 ??? ??????,????GB5023.6(????????????????)?????????????????
???????? ???????????????, ????EN50214???
??0?2 ?ā0?2 ?? ??.
???0?2 ??0?2 ?? ?У???????????
??0?2 ??0?2 ???? ??????п???????????????
?????????? ????????????壬?????????????????????????
???0?2?0?2?0?2?0?2?0?2 ??? ???PVC????,???(RAL7001) ?? ???(RAL9005)
????????????????
???????????????????
1????????ó??????35m??
2????????????1.6m/s;
?????????????????????????????????????п??????????????緼?????
?????????÷???????????
1????????????????80m??
2??????????4.0m/s~10.0 m/s;
?????????????????????????????????????п????????

?0?2