big extension spring  电动给水泵; 大拉簧

cylindroid helical-coil extension spring  圆柱螺旋拉伸弹簧

extension coil spring  拉伸螺旋弹簧

spring loaded spark plug extension  弹簧加载火花塞伸长部

Spring Force of Constant Torque Spring and Wing-up Spring  定型发条及上炼发条的驱动力

extension set [= extension telephone set]  分机; 副[电话]机

item extension and sequence extension pruning  项扩展和序列扩展剪枝

contact spring pile-up (contact spring assembly)  纺织腺; 触点簧片组件

half-elliptic spring(semi-elliptic spring)  半椭圆形弹簧

hard spring， hardening spring  硬弹簧

plate spring (plate-form-spring)  板弹簧

plate-form spring (plate spring)  板弹簧

Shape and Spring Back of Constant Torque Spring  定型发条的形状及翻动过程

soft spring ，softening spring  软弹簧

soft spring， softening spring  软弹簧

spring wheat spring corn intercropping system  春小麦/春玉米

(strongly) excellent extension  (强几乎)优越扩张

Ⅰ crack extension  Ⅰ型裂纹扩展

3D modling extension  三维实体造型