Replaceable self-sharpening plastic punches are able to significantly outlast conventional steel punches in most applications. 可更换的自锐塑料拳能够显着持续时间超过普通钢拳打在大多数应用中。
The microstructure and fine structure of weld fusion zone for high strength fine grain steel were studied. 研究了高强度细晶粒碳素钢焊接接头熔合区附近的显微组织及精细结构。
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. 采用铝热反应熔附成型技术在普通碳素钢管内壁涂覆一层较为均匀致密的陶瓷层。
