Bearings for the rolls are double-row ball bearings, which are convenient for maintenance and have longer service life.

辊筒采用双列调心滚动轴承支撑，维修方便，使用寿命长。

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The effects of double-row concave ridge and film mulching on phosphorus content in flue-cured tobacco leaves and soils were studied by field and laboratory experiments.

采用田间试验与室内分析相结合的方法，探讨了烤烟地膜覆盖与双行凹型垄结合对烤烟及土壤磷素含量的影响。

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Furthermore, experiments show that the adoption of double-row cascade diffusers in centrifugal compressors will improve its performance and widen its stable operating range.

此外，通过试验证明：在离心压气机上采用双列叶栅扩压器，可以改善压气机性能，扩大压气机的稳定工作范围。

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There's one more piece that we'd like to get out of that, and that is-- you may have been wondering, what's with the funky stuttering here of three double-quotes in a row. All right? And that is a specification.

但是你没有屏蔽这个函数的使用细节,在这里我们还想再讲一讲,那就是--你可能正在想,这里连续3个奇怪双引号,是干什么用的。

麻省理工公开课 - 计算机科学及编程导论课程节选

It was designed as a graduated double row of rectangular-cut emeralds, extending a pear and circular-cut diamond fringe, joined by circular and pear-shaped diamond clusters to the circular-cut diamond double row backchain, mounted on platinum.

FORBES: 34-Carat Princie Diamond Fetches Nearly $40 Million, Setting Two Records

Notes: Dragic reached double digits in assists for a career-best fifth game in a row.

WSJ: Nets escape with 102-100 victory over lowly Suns

The UK registered a double-dip recession last year, contracting for three quarters in a row before bouncing back with growth of 0.9% in the three months to September.

BBC: Clegg says Coalition was wrong to cut capital spending