在环状流下，A流路的贯通作用使折流板前后对应区域的含气率基本一致；
In annular flow the penetrating effect of stream A makes the void fraction same besides a baffle.
该区域的煤含硫量低，也因此更为清洁，但是在处理前能值(energy density)相对较低。
Coal from this region is low in sulphur, and so burns more cleanly, but has a relatively low energy density unless treated.
用来铺块石面路或其他区域的黑色含沥青的材料；通常覆盖在压碎的石头上。
A black bituminous material used for paving roads or other areas; usually spread over crushed rock.
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