Field application shows that an immersible pump method is the most ideal method for the oil vacuum unloading system of rail tank wag.
实践表明，卸槽潜油泵法是火车槽车负压卸油系统改造的最理想方法。
The leaching field is the part of the septic tank disposal system most prone to failure.
难题浸析区域是厌氧菌处理槽处理系统最易出现故障的部分。
The waste management system is comprised of a solid waste separator, septic tank and drain field.
粪污处理系统由固液分离机、化粪池和沥滤场组成。
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