Bowsprit Gammoning: Shows the bowsprit cleats, gammon cleats, gammoning knee, gammoning, wooldings, and bowsprit fairlead saddle.

桅夹板，猪腿夹板，猪腿膝关节，猪腿，绞扎绳索，及鞍状的导索器。

The relationship between microlithotype and the distribution of cleat in coal bed is discussed through a case from Hedong coalfield, combining microstratigraphy and statistics methods.

摘要综合利用显微地层学和统计学方法，以河东煤田中北部8＃煤层为例，研究了煤层显微煤岩类型与煤层分布的关系。

The result shows that the cleat density in coal bed varies in different microlithotype,and the occurrence of cleat is relevant to the grouping sequence of microlithotypes.

结果表明,不同显微煤岩类型煤体中的分布存较大的差异,同时分布的位置与显微煤岩类型的组合序列有关。