单词:membrane osmometer
单词:membrane osmometer 相关文章
A new report from the Ministry of Environmental Protection has revealed Beijing is at the center of China's worst area for air quality. CRI's Lucy Du has more. Reporter: The new report says in 74 Chinese cities, the average air quality readings only
On airplanes, cabin pressure changes during takeoff and landing to help passengers breathe easy at high altitudes. These changes in air pressure may make adults ears feel a little funny, prompting a few yawns to equalize the pressure. But for babies,
今天我们要学的词儿是impact。 Impact是影响、作用的意思。美国总统布什宣布对苏丹政府实施新的制裁。美国官员说,The sanctions will have a serious impact. 意思是制裁会产生重大影响。发展旅游业的
The United Nations is calling for a stronger international response to support Iraqi and Syrian refugees. Antonio Guterres, United Nations High Commissioner for Refugees said altogether some 15 million people have been displaced by the conflicts in I
今天我们要讲的习惯用语都有air这个词。大家都知道air是空气。早在十七世纪,意大利科学家伽利略发现空气似乎没有实质却有重量。后来人们进一步发现高山顶上的空气要比海平面上的空气