雨水斗应采用经水力测试的虹吸式雨水斗，且带有防涡流装置。
Rain bucket should be tested by hydraulic bucket siphon rain, and with the anti-eddy current device.
建筑法规可能还需要防虹吸或回流装置，使地表水不会被拖进水管道线路和住宅回来。
Building codes may also require anti-siphon or backflow devices, so surface water won't be pulled back into water lines and residential plumbing.
基于虹吸原理，设计了一种动态化学腐蚀法的简易装置，用于制备近场光学显微镜光纤探针。
A simple dynamic chemical etching device based on siphon principle is developed for fabrication of optical fiber probes which are commonly used in near-field optical microscopy.
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