Cylinder head made of aluminum alloy, which is light-weight and excellent in heat radiation.
气缸盖采用铝合金材料制成，具有重量轻，重量和散热良好。
Like the cylinder block, the head is made from either cast iron or aluminum alloy.
像气缸体一样，气缸盖是由铸铁或者铝合金制成。
The cylinder head is usually cast in one piece from iron, from iron alloyed with other metals, or from aluminum alloy.
缸体是由灰铸铁或含有镍或铬的合金铸铁整体铸造而成的。 有的缸体由铝浇铸而成。
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