n.航空母舰；平顶的屋子

The flattop is a popular style among Chinese men. 中国男生很流行平头。

The A4 incorporates a flattop receiver unit developed for the M4 Carbine. M16A4结合M4卡宾枪开发的模块化“平顶”型机匣。

Experimental investigations on the partially coherent flattop beam profiles[J]. 引用该论文 董梅梅

The equations of the accelerating voltage and its flattop versus parameters of the cell are given. 讨论了加速电压及其平顶和腔参数的关系。

A view of Cape Town with the flattop, 3,563-foot (1,086-meter) Table Mountain in the background. 意译：生动如画的开普敦图片。开普敦的一道风景线和平顶山，高3563英尺（1086米）的平顶山背景。

The M16A2, in turn, is currently being supplemented by the M16A4, which incorporates the flattop receiver unit developed for the M4 Carbine. M16A2如今反过来又被M16A4取代，后者采用了为M4卡宾枪开发的模块化“平顶”型机匣。