单词：equivalent energy sound level
单词：equivalent energy sound level 相关文章
There are six characteristics of speech, all of which are vital to speak effectively. In this section we'll look at each of them separately. These speech characteristics are basically important to you
疯狂英语2001年
I Intend to Go to University 1--You've just left school, haven't you, Sheila? 2--Yes, I finished last Friday. 1--You sound relieved. 2--Well, yes. I don't mind admitting that I am. I enjoyed school. But I did object to having to go in every day once
听力每日练习补充
VI. Nuclear Emergency Preparedness Exercises,Drills, Training and Public Communication核应急演习演练、培训与公众沟通 China attaches great importance to nuclearemergency preparedness exercises, drills, trainingand public communication,
英语笔译
DIALOGUE 45 1--You've just left school, haven't you, Sheila? 2--Yes, I finished last Friday. 1--You sound relieved. 2--Well, yes. I don't mind admitting that I am. I enjoyed school. But I did object t
英语经典听力对话
DIALOGUE 45 I Intend to Go to University 1--You've just left school, haven't you, Sheila? 2--Yes, I finished last Friday. 1--You sound relieved. 2--Well, yes. I don't mind admitting that I am. I enjoy
英语听力训练连载
World Environment Day (WED) is a day we all need to put in our diaries. It happens on June 5 every year and should be one of the most important days of the holiday calendar. WED was created in 1972 by the United Nations General Assembly. The environm
英语课程学习计划和讲义
Why Can We Hear the Sound of the Ocean in a Shell? Most children have probably wondered at the noise of roaring ocean waves magically captured inside seashells held up to their ears. According to popu
有声英文阅读
JEFFREY BROWN: Finally tonight, new findings and charges in the investigation of the Upper Big Branch Mine disaster in West Virginia. It was the deadliest in the U.S. in four decades29 men were killed on April 5, 2010, after an explosion at the mine
PBS访谈环境系列
Why Can We Hear the Sound of the Ocean in a Shell? 贝壳传来海洋之音？ Most children have probably wondered at the noise of roaring ocean waves magically captured inside seashells held up to their ears. According to popular belief, anyone luc
双语有声阅读
The Power in Gratitude When my older son was diagnosed with Attention Deficit Hyperactivity Disorder, my first reaction was relief － I finally knew the reason for his behavior. However, I was also overwhelmed with sadness, fear and anger. I felt so
每天一点英文
The Mississippi river remains near-record stayed across West Tennessee，Arkansas and here in Mississippi as well, swamping residencies, farmland and businesses. A lot of these people don't have flood insurance,and they may have nothing left.In prepa
CNN2011年(五)月
Delilah: Could you turn that down? Josh: What? Delilah: Could you turn your music down? Josh: Oh, sure. Is there a problem? Delilah: No, theres no problem. I was just trying to do some reading and the ear- splitting music coming from your room made i
地道美语播客
1 Sound Design When it comes to creating a productive office environmentits more than just four walls. According to a Cornell University study, even low-level noise in open-style offices can result in higher levels of stress and lower task motivation
实用英语
台湾籍旅美老师今天交给我们的句子是： The impact of CO2 at 2500 parts per million on the human brain is the equivalent of a blood alcohol level of 0.08. 二氧化碳浓度为0.25% 对大脑的影响程度，相当于酒测值0.08。
留美老师带你每日说英文
The completion of the system, first proposed in 2011, has been announced at a Beijing conference organized by the International Atomic Energy Agency. Liu Hua is the chief engineer of China's National Nuclear Safety Administration. In our central-leve
英语新闻
In Beijing, CPPCC members have held a news conference on how to preserve the environment and promote green development. They discussed the government's determination to protect the environment, the severity of climate change, and what role the media
cctv9英语新闻2016年
Talking loudly on a bus, subway or anywhere in public, really 在公交、地铁等公共场合大声讲电话 So you broke rule number six and you're officially single again. That doesn't give you carte blanch to have long, loud conversations about
英语听力广播—Listening
Among many things, water pollution prevention and control was strengthened. The percentage of water rated at level 5 grade, which is the lowest grade, decreased 6.8 percent. Also, daily waste water treatment capacities for cities and towns increased
cctv9英语新闻2016年
NEW YORK, Feb. 14 (Xinhua) -- U.S. stocks closed mixed on Monday as investors were digesting the government's budget proposal for fiscal 2012. U.S. President Barack Obama proposed（提议,计划） a budget on Monday, according to which the deficit
英语新闻
下面给大家提供一篇关于生活中噪音的影响的托福阅读背景材料，希望能拓宽同学们的阅读面。 I'm grad to see so many of you here. We'vebecome really alarmed over the health center by thenumber of students we are seei
托福英语