Pull the elastic tight and knot the ends.把橡皮筋拽紧,两头打上结。This skirt needs some new elastic in the waist.这条裙子需要换一根松紧腰带。I stretched that piece of elastic to its fullest extent.我将这条橡皮筋拉长到最大限度....
However, momentum is always conserved in a collision, whether or not the collision is elastic.然而, 不管碰撞是不是弹性的, 在碰撞过程中动量总是守恒的.The elastic interaction between a wedge disclination dipole and an interfacial crack was investi...
使集中集中或被聚集; 定位.To concentrate or be concentrated; localize.使集中,使聚合:使 ( 如光线 ) 集中在一中心点或向中心点集中; 集中.To cause ( light rays, for example ) to converge on or toward a central point; concentrate....
NOTES ON ANTS FROM ZHOUSHAN ISLANDS, ZHEJIANG ( HYMENOPTERA: FORMICIDAE )舟山群岛蚁科记述 ( 膜翅目、蚁科 )TWO NEW SPECIES OF THE ANT GENUS Prenolepis FROM YUNNAN CHINA ( Hymenoptera: Formicidae )云南平结蚁属二新种 ( 膜翅目: 蚁科 )...