简介:(天秤座9月24日-10月23日)在国足中,一提起“大佬”,人们便会自然而然地想到郝海东和范志毅;而慈祥的“老大哥”形象,那就非马明宇莫属了。其实,他们与江津比起来都算作是小老弟了。也许正是天秤座那特有的随和与顺从的性格,令江津一直处于不显山露水的状态,似乎永远也不会成为一个焦点人物,即便是他在十强赛中那最辉煌的时期。然而,天
简介:摘要随着社会的发展,人们对能源需求的急剧增加,节能意识日渐受到重视。高亮度LED灯以其功耗低、亮度高、寿命长等特点被广泛使用。本作品为简易稳定光源的设计与制作,采用德州仪器的LaunchPad(msp430g2553)单片机为控制核心,DAC(TLV5618)输出电压信号转换为电流来调节LED灯的亮度。本作品还带有其他功能,如LED灯的亮度随着外界光强的变化而自动变化,以维持总光强不变;实时显示外界光照强度的变化;周围2米内无人时,LED灯延时3~5秒自动熄灭。整个系统稳定度高、制作成本低,具有很好的实用性。
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简介:水相溶的空间位阻烷氧胺和羟基取代的烷氧胺以及稳定化组成物;含卤乙烯聚合物用耐热稳定剂组成物;着色稳定的聚酯树脂组成物;常温下贮存稳定的环氧树脂组成物;热稳定耐泛黄的含卤树脂组成物;