Join Lucy on an unforgettable journey to the 15th Beijing International Film Festival, taking place from April 18 to 26, 2025. This prestigious event commemorates 130 years of world cinema and 120 yea ...

黄金有着超棒的导电性、耐腐蚀性和延展性，在医疗设备的电子元器件里经常能看到它的身影。像霆升科技的心腔内超声产品，核心部件换能器就用了镀金工艺，这样能提高稳定性。而且黄金还能用来制作医疗器械的上游核心部件，比如心脏起搏器里的电气馈通件就会用到黄金焊圈， ...