up15daa,up15dab,up15dac,up15dad,up15dae,up15dbb,up15dcc,up15ddd,up15dee
up30daa,up30dab,up30dac,up30dad,up30dae,up30dbb,up30dcc,up30ddd,up30dee,up30dba,up30dca,up30dda,up30dea
up50daa,up50dab,up50dac,up50dad,up50dae,up50dbb,up50dcc,up50ddd,up50dee,up50dba,up50dca,up50dda,up50dea
滤波器可以对电源线中特定频率的频点或该频点以外的频率进行有效滤除，得到一个特定频率的电源信号，或消除一个特定频率后的电源信号。
三相变压器：用于三相系统的升、降电压。
up15tacc,up15tadd,up30tacc,up30tadd,up50tacc,up50tadd
up30s12w2,up30s24w2,up40s12w2,up40s24w2,up60s12w2,up60s24w2,up80s12w2,up80s24w2,up100s12w2,up100s24w2
up150s12w2,up150s24w2,up200s12w2,up200s24w2,up300s12w2,up300s24w2
up30s12f,up30s24f,upf24s24cf,upf24s48cf,upf30s24cf,upf30s48cfup500s12,up500s24,up600s05,up600s12,up600s24,up650s12,up650s24,up750s12,up750s24,up850s12,up850s24,up1000s12,up1000s24,up1200s12,up1200s24,up1500s12,up1500s24
led灯是一块电致发光的半导体材料芯片，用银胶或白胶固化到支架上，然后用银线或金线连接芯片和电路板，四周用环氧树脂密封，起到保护内部芯线的作用，-安装外壳，所以 led 灯的抗震性能好。
ledlight emitting diode，发光二极管，是一种能够将电能转化为可见光的固态的半导体器件，它可以直接把电转化为光。
蜂鸣器主要分为压电式蜂鸣器和电磁式蜂鸣器两种类型。
up15daa,up15dab,up15dac,up15dad,up15dae,up15dbb,up15dcc,up15ddd,up15dee
up30daa,up30dab,up30dac,up30dad,up30dae,up30dbb,up30dcc,up30ddd,up30dee,up30dba,up30dca,up30dda,up30dea
up50daa,up50dab,up50dac,up50dad,up50dae,up50dbb,up50dcc,up50ddd,up50dee,up50dba,up50dca,up50dda,up50dea
led灯又称发光二极管，比起其它光源，单个led灯的功耗是小的。
dpin滑台st1-40l st1-40r st1-40c延边巴中
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