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機器人：買日光燈管時會發現有分為T5和T9兩種，你知道它的數字是代表什麼意思呢？ A、價錢 B、編號 C、直徑 答案是C，你答對了嗎？我們來看影片的解說。
#科學 #能源 #自然 #科技 #氣候
分級:
片長:
發音:
發行:
導演:
分級: 普遍級
片長: 48 min
發音: 華語
發行: 2017-06
導演: 美國國家地理頻道 製作
片長: 46 min
發行: 2014-12
導演: 臺灣電視公司
片長: 1 min
發行: 2018-01
導演: 安偉民
片長: 51 min
發行: 2019-05
導演: NHK 製作
發行: 2013-06
導演: 製作人:宋穎鶯,主持人:何戎
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