Water temperature overhigh in engine is a frequent failure on excavators.
发动机水温过高是挖掘机中常见的故障。
The main obstacles to the work of professional qualification credentials are the overhigh exam expenses, inordinate teaching contents and lack of encouragement mechanism.
考试费用过高、教学内容不协调、激励机制缺失是职业资格证书考试工作的主要障碍。
The main rason of leading to overhigh hydrogen content was insufficient anneal after forged.