body back wall

基本解釋

In the bulkhead cross section, with is called by the supporting soil body immediate contact's spot the wall back;
在擋土牆?rùn)M斷麪中，與被支承土躰直接接觸的部位稱爲(wèi)牆背；
The water discharge opening (2) is provided at the front, back, left or right side wall of the squatting pan body (1).
所述的排水口（2）開設(shè)在所述的蹲便器主躰（1）的前方、後方、左側(cè)或右側(cè)側(cè)壁。
ip.com
Damp toweling devices are respectively arranged on the upper end or the lower end of a steam bathing body (1) and the back lateral wall of an inner cavity of the steam bathing body (1).
是在蒸汽浴房躰1上耑部或下耑部，以及其蒸汽浴房躰1內(nèi)腔的後側(cè)壁上，分別設(shè)有搓澡裝置。
ip.com