| 单词 | half trap |
| 释义 | > as lemmashalf trap half trap n. (in a sewer or drainage pipe) a trap (trap n.1 8a) with a roughly J- or hook-shaped curve. Π 1874 U.S. Patent 148,616 1/2 The half-traps thus made are set together and secured to each other by solder. 1922 H. P. Gillette Handbk. of Constr. Cost 736 A 9-in. half trap is set with the bottom 3 ft. 6 ins. above the planking. 2022 toolstation.com (accessed 2 Sept. 2022) Appliance Half Trap 40mm. < as lemmas |
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