杆件弯曲损失

STEVE INSKEEP, HOST: Here's something people do every day that many of us apparently do wrong - bending over, you know, to pick things up or put things down or even just to sit down. Now, a group of scientists who study bending say Americans are doin

发表于:2018-12-02 / 阅读(114) / 评论(0) 分类 2018年NPR美国国家公共电台2月

Mary wanted to be a nurse when she left school, but in the meanwhile, she joined the Red Cross and had some limited training. She was tought that, in case of an accident, and there was painterful in her town, she should give first aid at once and the

发表于:2018-12-02 / 阅读(154) / 评论(0) 分类 英语复述材料-第三辑

Researchers: Recycled Concrete's Time Has Come SOUTH BEND, INDIANA Recycling in the construction industry has become big business. It's easy to find new life for everything from old windows to wood beams. But until now, concrete the most widely used

发表于:2018-12-08 / 阅读(87) / 评论(0) 分类 VOA标准英语2016年(八月)

2017 、 边缘处理 edging 2018 、 链条 chain 2019 、 链传动 chaindrive 2020 、 链轮 chainwheel 2021 、 链轮齿 sprocket 2022 、 镗孔 boring 2023 、 錾 chisel 2024 、 关锁装置

发表于:2018-12-08 / 阅读(68) / 评论(0) 分类 英文名句短语

Concrete is one of the most widely used materials on the planet. And this consumption comes with a heavy ecological price. Rouzbeh Shahsavari, a materials scientist at Rice University. Around 5 to 10 percent of total CO2 emissions comes from concrete

发表于:2018-12-18 / 阅读(74) / 评论(0) 分类 2017年Scientific American(一)月

Topic1-Rating your doctor A new guideline document from the national government, concerning a new doctor-evaluating system said that patients' post-treating review for doctors would in future affect the doctors career development. Won't such reviews

发表于:2018-12-25 / 阅读(74) / 评论(0) 分类 英语角-圆桌会议

北京奥运28大项 参与,竞争,分享,进步 Swimming 游泳 BACKSTROKE 仰泳 Prior to the starting signal, the swimmers shall line up in the water facing the starting end, with both hands holding the starting grips. Standing in or on the gutter or bending th

发表于:2018-12-30 / 阅读(261) / 评论(0) 分类 奥运28大项比赛

spring goeth all in white robert bridges spring goeth all in white, crowned with milk-white may; in fleecy flocks of light, o'er heaven the white clouds stray; white butterflies in the air; white daisies prank the ground; the cherry and hoary pear, s

发表于:2018-12-31 / 阅读(270) / 评论(0) 分类 有声杂志阅读

陈豪在北京的ABC美国公司工作。他在走廊上远远地看到美国同事Amy,连忙赶了过去。 (Office ambience) C:Amy, 我有点儿急事想请教你。 A:OK, What is it? C:跟我一个办公室的Todd, 他妈妈在美国去世了

发表于:2018-12-31 / 阅读(104) / 评论(0) 分类 职场礼节英语

Grammar Girl here. Todays topic is cement versus concrete. Guest writer Sal Glynn writes: Accuracy is important. You might think concrete and cement are interchangeable, but you'll quickly find that you're mistaken when some guy at Home Depot rolls h

发表于:2019-01-02 / 阅读(164) / 评论(0) 分类 英语语法 Grammar Girl

The pilot and the passenger got into the plane. It was a small plane. It had one engine. It was an old plane. The pilot started the engine. Are you okay? he asked the passenger. She said she was okay. They were flying to an island. The island was onl

发表于:2019-01-04 / 阅读(68) / 评论(0) 分类 简单慢速英语阅读

Volunteers Help Revive LA's Concrete River Thousands of volunteers turned out on a recent weekend to remove the trash that has been deposited by winter rain storms. The Los Angeles River was lined with concrete in the late 1930s and 1940s, after year

发表于:2019-01-14 / 阅读(91) / 评论(0) 分类 VOA标准英语2013年(五月)

DEVELOPMENT REPORT - Long-Life Concrete Bridges By Jill Moss Broadcast: Monday, June 07, 2004 This is Robert Cohen with the VOA Special English Development Report. Each year, road accidents kill a mil

发表于:2019-01-16 / 阅读(113) / 评论(0) 分类 农业与发展

今天我们要学的词是concrete。 Concrete具体的,实质性的。美中战略与经济对话星期二结束。美联社报道说,The United States and China ended two days of high-level talks with few concrete results, 美中结束了为期两

发表于:2019-01-16 / 阅读(96) / 评论(0) 分类 英语每日一词

A gentleman who had traveled in Europe, relates that he one day visited the hospital of Berlin, 一位绅士曾去欧洲旅行,有一天,他去参观柏林一家医院。 where he saw a man whose exterior was very striking. 在医院里,他遇见

发表于:2019-01-17 / 阅读(78) / 评论(0) 分类 美国语文第五册

The bar owner was upset. His best customer was in the hospital. He had a head injury. What happened? the owners wife asked. He said, He drank too much. When he went outside, he fell down. His head hit the sidewalk. Now he's in the hospital. This isn'

发表于:2019-01-22 / 阅读(98) / 评论(0) 分类 英文短篇故事(纽约)

请看相关报道: Wang Lijun, Chongqing's former vice-mayor and police chief, has been charged with bending the law for selfish ends, defection, abuse of power and bribe-taking by the Chengdu City People's Procuratorate. 重庆市原副市长、公

发表于:2019-02-09 / 阅读(82) / 评论(0) 分类 英文语法词汇

Children of the future age, Reading this indignant page, Know that in a former time Love, sweet love, was thought a crime. In the age of gold, Free from winter's cold, Youth and maiden bright, To the holy light, Naked in the sunny beams delight. Once

发表于:2019-02-18 / 阅读(120) / 评论(0) 分类 阅读空间

Let me not to the marriage of true minds 呵,我绝不让两颗真心遇到障碍 Admit impediments. Love is not love 难成百年之好。爱不是真爱, Which alters when it alteration finds, 如果对方转弯自己立刻转向, Or bends wi

发表于:2019-02-24 / 阅读(142) / 评论(0) 分类 莎士比亚十四行诗全集

第三部分 你见过那棵树吗 My neighbor Mrs. Gargan first told me about it. Have you seen the tree? she asked as I was sitting in the backyard enjoying the October twilight. 关于那棵树,最初是我的邻居加根太太告诉我的。你见

发表于:2019-02-25 / 阅读(87) / 评论(0) 分类 双语有声阅读