加拿大外贸
一家韩国客人要12W PCM LED downlight, 这个PCM 是什么意思呀? 是这个灯的材料吗? 我们downlight的 body 材料是PC, aluminum, 请问一样吗??刚做LED 外贸 不懂呀。
谢谢@
评论
PCM,相变材料。以下抄一段
A phase change material (PCM) is used as thermal storage for lighting systems. The PCM is placed in a thermally conductive container in close contact with the lighting system. As the PCM absorbs heat, it changes from a solid to a liquid state, but the temperature of the PCM is clamped at its melting point temperature. For LED-based systems, the PCM is selected to have a melting point such that the junction temperatures of the LEDs in the system are maintained at approximately their optimum operating temperature inside the lighting system housing. Because the thermal conductivity of the molten PCM is poor, a low thermal resistance heat flow path is provided from the PCM to the container.
FYI.
加拿大电商露天电影首发——葡中双语字幕《中央车站》 http://bbs.shanghai.com/thread-1714999-1-1.html screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt='Click here to open new window\nCTRL+Mouse wheel to zoo 加拿大电商做区块链为什么都注册新加坡基金会 目前做区块链项目的客户都会通过注册基金会来作为项目的主体,为什么都在新加坡注册基金会,首先性价比高,而且新加坡市场也比较成熟,项目
·加拿大新闻 加拿大人发起集体诉讼起诉TikTok:用户可能获赔多少钱?
·加拿大新闻 PaulSmith&MINI广州首发,细节藏满英伦浪漫
·加拿大新闻 “67”一词为何如此流行?列治文小学又为何临时取消“67日”活
·加拿大新闻 加拿大唐人街128年制面厂月底关门,老板一句话让人泪目…
·加拿大新闻 定义“下一代油车”,全新换代威兰达15.98万起售
·汽车 安息吧艾伦·莫法特
·汽车 中心制动灯球 BA