Wear, play, slackness, leakage, dust, dirt, corrosion, deformation, adherence of raw materials,surface damage, cracking,overheating, vibration, noise, and other abnormalities.

• 磨损、松驰、泄露、灰尘、污垢、腐蚀变形、原材料粘黏、表面磨损、裂缝、过热、震动、噪音及其它不正常现象。