Replaceable self-sharpening plastic punches are able to significantly outlast conventional steel punches in most applications. 可更換的自銳塑料拳能夠顯著(zhù)持續時(shí)間超過(guò)普通鋼拳打在大多數應用中。
The microstructure and fine structure of weld fusion zone for high strength fine grain steel were studied. 研究了高強度細晶粒碳素鋼焊接接頭熔合區附近的顯微組織及精細結構。
The carbon steel pipe was lined with a uniform dense and thick ceramic coating on its inner surface by the thermite reaction fusion adhesion process. 采用鋁熱反應熔附成型技術(shù)在普通碳素鋼管內壁涂覆一層較為均勻致密的陶瓷層。
