知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 The resulting steel appears to obtain a mix of toughness and toughness that is similar to that of modern steels that are quite full of alloy content and, hence, extremely highly-priced. 企业能在全球范围招人，跨国家、时区�