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。

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The formula shows the transport rate is not a constant but varies with the relative exposure degree of particles that lying on riverbed when the flow intensity is at fixed value.

提出了一种计算推移质输沙率的方法及公式，该公式表明，在水流强度一定时，输沙率并非为一个常量，而是随颗粒在床面的相对暴露度而变。

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With smaller atomizing air flow rate compared to that of other nozzles, this spray nozzle is particularly suitable to being fixed on furnaces used in marginal oil fields.

与其它气动雾化喷嘴相比，这种喷嘴需要的雾化气量小，尤其适用于边际油田或无配套蒸汽锅炉的原油加热炉燃烧器。

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