In order to reduce the cost of the diesel engine cylinder head cover, the panel substituted the original aluminum cast part.
为了降低柴油机气缸盖罩的成本，使用板件替代原先的铸铝件。
Taking its application in cleaning of diesel engine cylinder head as an example, the cleaning results by ultrasonic-wave cleaning techniques shows good and satisfactory.
以柴油机缸盖超声波清洗机为例，阐述了超声波的清洗工艺及其应用。
Research has believed that veining in admission and exhaust passage of diesel engine cylinder head may mainly be caused by crack of sand core occurring in high temperature phase change expansion.
研究认为，柴油机气缸盖进、排气道脉纹的产生主要是由硅砂高温发生相变膨胀导致砂芯开裂引起的。
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