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after the experiment it was noted that all three plates were perforated like a petal and that the petalled hole of the back plate was bigger than that of the front plate.
实验后发现,这三块板都被打穿了,上面布满花瓣状孔,并且后面板上的孔比前面板上的大。
some wells (particularly in kuwait) have dual completions, meaning that the well casing is perforated in two oil producing zones permitting the well to produce oil from both zones.
有些油井(特别是在科威特)具有双层完井,这意味着钻井套管在两个采油区钻孔,因此该油井可以在这两个区采油。
these paintings were attached to concave perforated sheets on which a large amount of soft asbestos-containing material had been applied. those mural paintings were removed in 1960 and were replaced by large wall hangings;
这些壁画附在多孔凹面,其上涂抹大量含软石棉材料,这些壁画于1960年卸下,换成大型墙饰;
26 hunting rifles; 20 holsters; 22 regular plastic butts; 20 plastic perforated foldable butts; two hunting rifles, one a magnum and one a beretta
26支猎枪;20个手枪皮套;22个普通塑料枪托;20个打孔的塑料可折叠枪托;2把猎枪;1把magnum枪;1把biretta枪