Improved drainage stoma 改良造口引流术
Improved single-hole drainage 改良单孔引流术
Improved trepanation and drainage 改良式钻孔引流
Objective:To evaluate improved drainage method in pit operation.
目的：评价改良引流法用于肛肠术后的临床价值。
They sustained this dense settlement through raised field agriculture, a technique that improved drainage and recycled nutrients in the poor tropical soil.
高地农业技术可以改善贫瘠的热带土壤的排水和养分的循环利用。
Some of these efforts include energy efficiency, new drainage systems, and improved transportation infrastructure.
这些努力包括能源效率、新的排水系统以及改进的交通基础设施。
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