单词 | s-trap |
释义 | > as lemmasS-trap S-trap n. Π 1882 S. S. Hellyer Lect. Sci. & Art Sanitary Plumbing iii. 108 About the first form of trap used for fixing under water-closets was the syphon or round-pipe trap, i.e., a pipe bent and recurved in the shape of the letter ?.] 1885 P. J. Davies Standard Pract. Plumbing I. 103 Fig. 205 is the ordinary half ?-trap, wrongly called ?-trap. 1976 R. Day All about Plumbing 64/1 In a ground floor w.c. it is usual to fit an S trap,..but in an upstairs floor w.c., a P trap is usually installed. < as lemmas |
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