The normal interest rate swap method is plain vanilla swap between floating rate and fixed rate. In substance, it is the cash flow swap between two interest payments.
利率互换最普遍的形式是浮动利率与固定利率之间的单纯利率互换，其实质就是将未来两组利息的现金流量进行互换。
The purification technique, combining bivalve and plant floating-bed, could not only get rid of suspended substance and algae, but also remove the nutrient effectively.
河蚌与植物集成净化技术既能够消除水体悬浮物、藻类，又可有效去除营养盐。
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