...3 学会实验室灭菌锅的使用方法 二、常用器具和仪器 试管(test tube ),德汉氏小管(Durham tube ),玻璃吸管(glass pipette ),吸器,微量加样器(micropipette ),吸嘴(tip ),培养皿(petri dish),三角瓶(erlenmeyer flask),接种铲(inoculati...
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世界新闻—一份英文报纸公布了据说显示出奥运会多项金牌得主从一根玻璃吸管中吸食物品,该吸管通常用于吸食药物。
British newspaper, the News of the World, published the photo allegedly showing the multiple Olympic gold medal-winner inhaling from a glass pipe which is generally used to smoke the drug.
如果水具有负折射率,那么放在玻璃杯中的吸管似乎可能弯曲到自身下方。
If water had a negative index of refraction, then a straw placed in a glass would appear to bend back under itself.
这种作用解释了为什么看起来玻璃杯中的吸管在水面处弯曲。
This effect explains why a straw in a glass of water appears to bend at the surface of the water.
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