Jitter, that is very likely damage degaussed resistance, in the absence of sound may be the relay and control circuit problem.

抖动，说明极有可能是消磁电阻损坏，如果没有响声则可能继电器及其控制电路有问题。

youdao

Sound steering drive mechanism can also decrease steering resistance, and increasing appropriate hydraulic assist steering can realize the aim of steering portability.

合理的转向传动机构能减小转向阻力，再配上适当的液压动力辅助转向，达到转向轻便的目的。

youdao

PC board with pervious to light quality, impact resistance, heat insulation, weather resistance, prevent dewing excellence, flame retardant, sound insulation and processing function.

PC板具有透光性强、抗冲击、隔热、耐候、防结露、阻燃、隔声和超卓的加工功用等。

youdao