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

additional bob-weight

balance bob

bicone-bob torsion pendulum viscometer

BM Bob Metcalfe

boat’boat’bob weight

bob

BOB Beginning Of Block

Bob cotton

bob gauge