加拿大进出口外贸英语专业术语不懂，求指教

加拿大外贸

7.ews-5 "bands"-perforated metal panel cladding system

a.  system description : vertical, under -slung and back-tilted panelized

perforated metal panel system forming faceted bands around the building. System

consists of an outer layer of custom perforated and solid metal panels supported

on a unitized aluminum sub-frame assembly designed to connect to the primary

building structure to accommodate cumulative structural movements without

pronounced differential effect.Refer to Section 074213 for detailed

specifications.

1) The fastening methodology must minimize the visibility of the seams in

accordance with the Engineering intent.
2) The custom framing allows for differential building movement
3  The framing is attached to an overall panel substructure comprised of factory

-constructed aluminum members sized accordingly
4) The system is supported on a band facet superstructure to be coordinated with

structural Engineer
5) The system is coordinated with facade illumination requirements to be

determined

b.system Materials:
1) Perforated Stainless Steel Panels -10 gauge (3.5mm) thick Type 316L Stainless

Steel panel with custom perforations, 50mm return legs with back face V-cut

release.
2) Aluminum Support/Backup Frame - Alloy 6063-T6,PVDF2 coated.
3) Steel Bracket Receivers - painted mild steel elements (to be determined) pre-

welded to primary structure backup.




客户要冲孔网，以上是产品要求。只是这句不懂：50mm return legs with back face V-cut

release.



这是客户第二封信：
Please confirm on the following items as well.

1.) Is directional satin finish no. 4 considered in your proposal?
2.) Is fabrication and 50mm return legs on the edge included?

也看不懂什么意思。不敢贸然回复客户，急等帮助中。。。。。。。。。。。。。。。。。。。。。。
在此谢过各位！！！！ :)
加拿大电商昨天我把提单复件发给了客户，今天收到了他回信，如下： Dear Nicholas, please send all shipping documents. We will check B/L copy and we will reply ASAP. Thank you Best Regards ......................................... 加拿大电商刚从事这行半年，对电子行业不了解，自己整理了些，算是学习，供大家分享，也请大家补充。我毕竟是个文科生，对这方面知识严重欠缺。 DVD:英文全名是Digital Video Disk, 即数字视频光
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