Spring Force of Constant Torque Spring and Wing-up Spring
contact spring pile-up (contact spring assembly)
half-elliptic spring(semi-elliptic spring)
hard spring, hardening spring
plate spring (plate-form-spring)
plate-form spring (plate spring)
Shape and Spring Back of Constant Torque Spring
soft spring ,softening spring
soft spring, softening spring
spring wheat spring corn intercropping system
bicone-bob torsion pendulum viscometer
bob
截尾
钓具用浮子
乳犊
铅锥
摇动
悬锤
摆锤
摆动
测锤
暗冒口
抛光轮
吊锤
铅锤摆锤测锤
铅锤
鲍勃
Bob语言
摆
光细拈
秤锤
配重
来回的动
大雪撬
往复运动
一柬
一先令
行
剪短
备用办公箱
块开始