Fracture control blasting, a new perimeter control technique, is an alternative to pre-splitting or smooth wall blasting which can be used to achieve better perimeter control results.

断裂控制爆破是一种新的周界控制爆破方法，用它取代预裂和光面爆破，可以获得更好的周界控制效果。

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Corrugated wall horns and smooth wall multimode horns are two comparatively ideal feeds with high efficiency.

波纹喇叭与光壁多模喇叭是两种比较理想的高效率馈源。

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This early wall has a smooth and solid look.

VOA: special.2009.06.01

Through the 1970s scientists focused on the interaction between deposits of cholesterol and the smooth muscle cells of the vessel wall that contains it.

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Wall Street got a smooth start Wednesday, as U.S. markets resumed trading after a two-day shutdown due to Hurricane Sandy, but stocks surrendered early gains about an hour into the session.

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