The river marks the eastern perimeter of our land. 这条河标示我们的土地东面的边界。
Suitable parameters of perimeter blasting were obtained with good results.In the final, the paper discussed the blasting mechanism of the frozen soil and the blastin... 通过试验获得了较好效果下周边爆破的适宜参数,并对冻土的爆破机理和爆破对冻结管的影响问题进行了探讨。
A perimeter is a path that surrounds a two-dimensional shape. The word comes from the Greek peri (around) and meter (measure). The term may be used either for the path or its length - it can be thought of as the length of the outline of a shape. The perimeter of a circle or ellipse is called its circumference.