英语翻译

题目

英语翻译
客户要消防水带,我怎么也弄不明白,
Q.TY DESCRIPTIONS
250 DN45 20MT VVFF - Light Nozzles
200 DN45 20MT VVFF - Light Nozzles
70 DN45 20MT VVFF - Light Nozzles
1350 DN45 20MT UNI 804 - Heavy Nozzles
350 DN45 20MT UNI 804 - Heavy Nozzles
130 DN45 20MT UNI 804 - Heavy Nozzles
40 DN45 20MT UNI 804 - Heavy Nozzles
30 DN45 20MT UNI 804 - Heavy Nozzles
30 DN70 20MT VVFF - Light Nozzles
Notes.
Working pressure 10 bar
Bursing pressure 40 bar
Rubber slevees internal materials
Quotation should be C&F Genova
因为本人才开始做外贸,是个菜鸟,

答案

size:1 3/4"(DN45)DN:nominal diameterDN45:nominal diameter 45mmDN70:nominal diameter 70mmv.v.f.f.(a safety standard?)- national corp of fireman/fire departments(Italian:Vigili del Fuoco)