body back wall

基本解释

In the bulkhead cross section, with is called by the supporting soil body immediate contact's spot the wall back;
在擋土牆橫斷麪中，與被支承土躰直接接觸的部位稱爲牆背；
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）開設在所述的蹲便器主躰（1）的前方、後方、左側或右側側壁。
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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內腔的後側壁上，分別設有搓澡裝置。
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