本文以宁夏南部山区为例，简要地介绍了田坎系数测算过程。
Taking southern mountainous land of Ningxia as an example, the paper briefly introduces the ridge coefficient calculation process.
在马来西亚的科塔布鲁附近的一个田坎上，母亲与孩子们着手移栽秧苗。
Mother and youngsters on a dike near Kota Bharu, Malaysia, set out to transplant seedlings.
在马来西亚的科塔布鲁附近的一个田坎上，母亲与孩子们着手移栽秧苗。
Mother and youngsters on a dike near Kota Bharu, Malaysia, set out to transplant seedlings.
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