这可以通过多种方式达到，但基本上不外乎，在基托组织面沿后缘制作一个突起的沟或区域，这就是常提到的后堤。
This is achieved in a variety of ways, but essentially involves creating a raised groove or area along the posterior border, on the fitting surface. This is often referred to as the postdam.
KG是一家生产不同尺寸堤边割草机，清沟器， 街道、轨道和渠道建筑的企业。
The company Anton Berkenheger GmbH &Co. KG offers services from the ranges Road, rail and canal construction, Embankment mower in addition to Pit cleaning devices.
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