曲轴主轴承上中轴瓦的英文

upper center crankshaft bearing

• 曲轴:    crank shaft
• 主轴:    principal axis; ch ...
• 承:    bear; hold; carry
• 上:    upper; up; upward
• 中:    hit; fit exactly
• 轴瓦:    step brass; bush; ...