Pneumatic drifter is a new short distance and small bore underground construction machine.

气动穿孔机是一种新型短距离、小直径地下施工机械。

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This paper introduces the study on several types of small bore high speed diesel engines with a shallow W type combustion system.

报导了在几种型号小缸径高速柴油机上采用浅W型燃烧系统的研究工作。

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The Sports Council for Wales has recognised the need for an Olympic standard range for air gun, air rifle, and small bore rifle shooting.

BBC: Youth airgun marksman

The fiscal plan is actually a mix of small-bore tax cuts and tax increases.

FORBES: Obama Proposes Tax 'Deform'

More common are small-bore disputes: lawyers whose sniping, in person and on paper, can spiral out of control.

WSJ: Lawyers Behaving Badly Get A Dressing Down From Civility Cops