凹顶 meaning in English
concave crown
◇凹顶活塞 concave head piston
Examples
- Cylinder head pocket
汽缸盖凹顶 - Concave head piston
凹顶活塞 - 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 - 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 - 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 % 。