In these cases, plan to budget for periodic replacement of sprinkler heads and other irrigation system components.

在这种情况下，计划预算花洒头的灌溉系统和其他部件的定期更换。

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In most cases, low water pressure is the main reason for irrigation problems.

在大多数情况下，低水压是灌溉问题的主要原因。

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Methods to review and analyze the clinical materials of 27 cases for colon irrigation intraoperatively and one-stage anastomosis of left hemi-colon acute obstruction.

方法回顾性分析27例急性左半结肠梗阻行术中灌洗一期手术吻合的临床资料。

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In each of these cases, an upstream country plans to build large dams to develop hydropower and irrigation systems, which will likely have significant negative impacts on the downstream neighbor.

FORBES: World Water Day 2013: Water as a Catalyst for Peace