Today, while sitting with my son, an ice cream cone landed on my head from out of no where.
今天和儿子在一起坐着的时候，突然一只蛋筒冰淇淋落在我头上。
2
Conehead drive screw with washer - used on roof for keeping fixing holes watertight.
锥头机螺钉垫圈-用于屋顶保持固定孔水密。
3
The equations is used whether roller is column or cone, cam is in spine or groove location, left or right helical, single head or many heads and how it is turning.