单词：ground-glass sounding tube
单词：ground-glass sounding tube 相关文章
Lesson 88 Condensation 第88课 冷凝 When the water in a kettle boils, it boils first at the bottom. 当水壶中的水沸腾时, 首先开始沸腾的是底部的水。 We cannot see this in a kettle, because the kettle is made of iron. 我们无法
英国学生科学读本
Kevin had just finished dessert. It was a piece of dark chocolate, washed down with a glass of cold milk. Delicious! He rinsed his mouth out with a glass of water, and then spit into the kitchen sink. He sat down at the dining room table and grabbed
365个英语简短小故事
BBC Learning English London Life Friendliness on the tube Yvonne:I'm Yvonne Archer and this is London Life from bbclearningenglish.com. Hello! In today's programme, we're talking about friendliness on London's tubes. Is there any? As you probably kn
伦敦生活
今天要讲的习惯用语由floor或者ceiling组成。Floor是地板，而ceiling解释为 天花板。好，让我们由下而上来学吧。一栋房子的底层常常叫作the ground floor。在生意场上你很可能会听到这样的说法：
美国习惯用语
This extra jostling pushes the atoms farther apart, causing the whole substance to slightly increase in size. If the substance cools off, its atoms stop pushing against each other so vigorously. This makes the substance shrink again. This connection
英语时差8，16
Chinese Academy of Sciences successfully launched a new sounding rocket, Kunpeng-1B, in Hainan Danzhou early Wednesday. The rocket reached a flight height of 300 kilometers for the first time. Its arrow configuration of altitude control system and ca
cctv9英语新闻2016年