Using large double drive melt pumps in petrochemical industry has become a trend.

在石化行业中使用大型双驱动熔体泵已成为一种趋势。

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Hydraulic double drive, 3-stage infinitely variable speeds and good gradeability.

全液压双驱，三档无级变速，爬坡能力强。

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This paper mainly introduces the structure and working principle of double drive axle, analyzes ordinary failure and presents the solving method and using notice.

本文主要介绍双联驱动桥的结构及工作原理，分析常见故障，提出排除方法及使用注意事项。

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The SS-AR2's incorporated drivers support a maximum input power of 100 watts through a 25 mm (one inch) soft dome, a 130 mm (five inch) sliced-paper cone and a 165 mm (six and a half inches) aluminum cone (double-drive system), producing a frequency response from 42 Hz to 60kHz.

ENGADGET: Sony reveals SS-AR2 loudspeaker, wants an invite to your next house party

The 8X Super Multi double-layer DVD drive lets customers read all types of DVD and CD media, so they can enjoy popular movies and games while on the go, as well as have access to music files and photos for downloading and sharing on websites.

ENGADGET: Gateway pumps out EC Series ultraportables

Phelps plunked two consecutive batters with pitches, forcing in a run, and Barnes beat out a potential double-play grounder to drive in another.

WSJ: Cano homers, Yankees hold off Astros 5-4