Decreasing stroke rate by 3-8 strokes per minute to allow for a long, smooth, rolling stroke.

降低划频每分钟3 ~ 8下，这样才能拥有长的，顺畅的，有滚动的划水。

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Hollow glass microspheres has a good rolling performance, and it can increase the drilling rate, and Significantly improve the drilling efficiency.

空心玻璃微珠的滚动性能好，可提高机械钻速，从而显著提高钻井效率。

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Big ferrites and hot rolling texture are left behind in particle structures, Which leads the anisotropy of mechanics, so the tensile strength and elongation rate reduce.

含有粗大的铁素体晶粒和残留的热轧织构，引起力学性能的各向异性，导致了抗拉强度和延伸率的降低。

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Analysts note that the rolling rate hike has been pushed out to spring 2014, as opposed to mid-2013.

FORBES: Elusive Economic Growth Weighs on EURO

So this weakness could delay a rate hike, even as 12 month rolling IPCA inflation is around 6.4%, not where the Central Bank wants it.

FORBES: For Bond Investors, Sentiment Shifting On Brazil Rates

However, if interest rates begin to rise toward their historical averages (the average yield on the 10-year note is 7.3%, vs. 3.4% today) investors may balk at rolling over their debt, which would increase our interest rate expenses and could bankrupt the country.

FORBES: The Macro View