1.拉紧,绷紧
1.to become firm or tight, or to make something firm or tight
1.Application of YZLA Tautening Device on the Long-distance Belt Conveyer
YZLA拉紧装置在长距离带式输送机上的应用
2.Improvement of Driving Chain Wheel Group and Tautening Device on HL Elevator Machinery
HL型斗式提升机传动装置和拉紧装置的改进