检索式：alloy??? ? 可检索出包含：alloy，alloyed，alloying等检索词的所有文献

RICKETY: FURNITURE :: A: petrified: forest B: alloyed: metal C: ragged: clothing D: speckled: egg E: spavined: insect

将以下段落翻译成中文：The cylinder head is bolted to the block. The manufacture casts the cylinder head in one piece from iron, from iron alloyed with other metals, or from aluminum alloy. Aluminum has the advantage of combining lightness with rather high heat conductivity.Depending on the style of engine, the cylinder head serves many functions.