Proper sodium sulphide can increase the floating speed of Cu mineral in slag and Cu grade of concentrate on the premise that the desired recovery is gained.

探讨了硫化钠的作用机理，硫化钠可提高铜矿物浮游速度，在预期回收率前提下提高铜精矿品位。

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High-grade passenger car abroad adopts floating floor with high performance of vibration absorption and sound insulation.

国外高档客车均采用浮筑地板，浮筑地板具有良好的减振、隔声性能。

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All sand grains are quartz sands. Sorting and roundness and sphericity of particles are in good grade-level. Quartz sands are scattered in microcrystalline dolomitic sands in floating state.

岩石中的石英砂分选好，圆度和球度高，它们时稀时密地呈“悬浮”状散布在白云石砂屑沉积物中。

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For one thing, it is hard to know how much companies have in fact lengthened the maturity of their debts because the interest-rate swap market allows them to swap those fixed bond payments into cheaper floating debt, a popular strategy in the investment-grade market.

ECONOMIST: Better to feast on cookies than junk bonds

For individuals the good news is that there are mutual funds that make it easy to invest in diversified portfolios of floating-rate loans, mostly made by banks to corporations with less than investment-grade bond ratings.

FORBES: Fixed Income for Bears

These days, he has a new floating toy--the 533-foot yacht Eclipse, which boasts bulletproof windows, a military-grade missile defense system and an escape submarine.

FORBES