(1) 信口；随口。(2) 戏曲中的说白。(3) 木刻书的一种板式，中央折缝处上下都白的称“白口。”
白口和反白口缺陷是球铁件转向节的常见缺陷。
Both the chill and reverse chill are defects often found in the nodular iron knucle castings.
第一构造层为蓟县纪—青白口纪早期弧后边缘盆地沉积。
The first one is back arc basin sediment in margin of back arc during Jixian Period-early Qingbaikou Period.
研究以硼化物为耐磨相的新型耐磨白口铸铁的组织特点与力学性能。
The microstructure and mechanical properties of a new type wear-resistant white cast iron with the boride as wear-resistant phase were investigated.
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