中心力是由球对称的势能函数而来的力.A central force is one derived from a potential - energy function that is spherically symmetric.有心力是一种径向力,它的大小只取于离原点的距离.A central force is a radial force which depends only on the distance from the orig...
It has performed reliably when used at very high retentions in full - cell impregnation processes.当用满细胞法使它具有很高的保持量时,它的使用是很可靠的.Structure and performance of aluminum impregnation to steel _ container are studied.研究了渗铝包子桶的组...
这些修葺一新的房屋俯视着静静流淌的运河河网。These restored houses overhang a system of quiet canals.雕像用一双盲眼俯视着他们。The statue stared down at them with sightless eyes.他将窗帘拉到一边, 俯视街道.Drawing the curtain aside, he looked down into the street....