凹顶的英文

concave crown
◇凹顶活塞 concave head piston

• 凹:    low-lying area; de ...
• 凹顶的:    emarginate
• 凹顶棚:    recessed ceiling

例句与用法

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1. Cylinder head pocket
   汽缸盖凹顶
2. Concave head piston
   凹顶活塞
3. Specification for low voltage switchgear and controlgear for industrial use - mounting rails - top hat rails 35 mm wide for snap - on mounting of equipment
   工业用低压开关设备和控制装置规范.支承轨.设备快速安装用35mm宽凹顶轨
4. Specification for low voltage switchgear and controlgear for industrial use - mounting rails - top hat rails 75 mm wide for snap - on mounting of equipment
   工业用低压开关设备和控制装置规范.支承轨.设备快速安装用75mm宽凹顶轨
5. Laurencia ethanolic extraction contained 4 kinds of satutated fatty acids , 2 kinds of monounsaturated fatty acids and 6 kinds of polyunsaturated fatty acids with the contents as 18 . 095 % , 3 . 910 % and 7 . 437 % , respectively
   凹顶藻提取物中含饱和脂肪酸4种，总体百分含量为18 . 095 % ；单不饱和脂肪酸2种，总百分含量为3 . 910 % ；多不饱和脂肪酸种类较多，共有6种，总百分含量为7 . 437 % 。