Busbar in the actual operation of the current great up hundreds of thousands of amperes and voltage is very small, and because of wear and tear resistance fever, If not timely heat, the temperature would increase bus may exceed the allowable temperature, which can affect their work performance, even burn.

母線在實(shí)際運(yùn)行中通過(guò)的電流很大可達(dá)幾十萬(wàn)安培而電壓很小看av网址，且由于電阻損耗而發(fā)熱激情男女AA欧美，如不能及時(shí)散熱男女www视频在线看网站，母線溫度將升高免费18禁止观看黄网站，可能超過(guò)允許溫度人操人操人操人操人操人操人操，從而影響其工作性能亚洲天堂的无码在线视频，甚至可能燒壞。

Lots of research work has been done in the field of definition of ecotourism, the programming of ecotourism, the management of ecotourism, the environment of ecotourism etc, but less attention has been paid on ecotourism region. The research on the evaluation and assessment of ecotourism performance has not been reported up to now.

生態(tài)旅游要求實(shí)現(xiàn)旅游地的經(jīng)濟(jì)效益、社會(huì)效益sansansy.com、環(huán)境效益的高度統(tǒng)一欧美第一黄站视频，成為旅游可持續(xù)發(fā)展的有效途徑，符合當(dāng)今世界發(fā)展的趨勢(shì)和潮流欧美精品理论片大全，這正是生態(tài)旅游的生命力之所在国内精品久久久久影院网站，也是國(guó)內(nèi)外學(xué)者熱衷于研究它的原因。

I need to catch up and work hard for prepare my final Exam now.

我要趕上和努力网站视频免黄片大全皮毛大全，為我準(zhǔn)備的最后考試中文字幕黄网。

In the finality, the main work of this paper is summed up, with the problems requiring further studies discussed.

最后，對(duì)全文的研究工作進(jìn)行了總結(jié)欧美三级电影免费观看，并討論了今后進(jìn)一步的工作欧美一级A片免费观看免费图片儿。。

He began to tidy up his desk and finish off the week's work.

他開(kāi)始整理起他的辦公桌，以便結(jié)束一周來(lái)的工作亚洲国产日韩欧美视频。

He hopes to be able to get back to work on the V12 and finish it up soon, but with only one set of hands and eyes he is like many craftsmen.

他希望能夠回到工作JIZZJIZZ在线中国，對(duì)V12引擎并完成它很快，但只有一組的手和眼睛国产精品毛片无码一区二区，他是許多人一樣技工欧美一级视频97。

You have got to stay up late to finish the work.

你的熬夜完成工作。

People who work in aquaria tell us the size of fishbowl could tell us the shark's size after they grow up.

水族館的工作人員告訴我們魚(yú)缸的大小決定鯊魚(yú)能長(zhǎng)多大你懂的精品视频。

I will fix up you a house ,if you can work for me.

如果你能為我工作欧美A片偷拍视频，我將給你提供一個(gè)房子。

You need to give up your free time–TV, parties, leisure activities and work on your fixer.

你必須放棄你的自由時(shí)間www九一在线视频，電視粗粗色，政黨，休閑活動(dòng)和工作的固定器999人人操人人摸人人看。