This paper analyses the factors that affect the contact stress of rock bit journal bearing.

Design calculation process as well as machining technology of rock bit are detailed introduced.

详细介绍了104牙轮钻头的设计计算过程和加工工艺.

Diameter controlling is of great importance in rock bit manufacturing.

保证三牙轮钻头的直径是钻头制造工艺的重点.

The program instructions in a read-only storage.

存放在只读存储器中的程序指令.

When Mary Tudor became Queen after Edward, she attempted to forcibly recovert England to Roman Catholicism.

玛丽都铎再爱德华后当上女王, 她试图强迫人们重新皈依罗马天主教.

Not without reason, the eternal city is also called the open air museum.

毫无疑问, 永恒之城(译者:指意大利首都罗马)也被称作露天博物馆.

But did not say, the White House is in 1902 President Theodore Roosevelt officially named.

但当时并不称白宫, “白宫”是1902年西奥多·罗斯福总统正式命名的.

Power invariably means both responsibility and danger ─ Theodore Roosevelt.

实力永远意味着责任和危险─西奥多·罗斯福.

The guide showed us the old house of former President Theodore Roosevelt.

导游带我们参观了前总统西奥多?罗斯福的故居.

I just read the Emund Morris's book on Theodore Roosevelt.

我刚读过埃德蒙·莫里斯写的关于西奥多·罗斯福的书.

I, I interviewed Eleanor Roosevelt when I was 23 years old.

23岁时我就采访了埃莉诺.罗斯福,她的儿子是迈阿密市市长.

And the way I've regarded Eleanor Roosevelt has never been the same.

而我对埃莉诺·罗斯福的看法也不再和以前一样了.

When Eleanor Roosevelt collapse from too much traveling around?

什么时候艾丽纳·罗斯福因太多的旅行而倒下?

The symptoms observed on the leaves are the result of fungal activity on the root system.

叶片上所观察到的症状是真菌作用于根系的结果.

The root system development ability of cotton with different cultivation way is analyzed.

研究了不同耕作方式棉花根系的发育能力.

He buried the vines so the root system could continue to grow.

这些的根须才会继续生长. 他用得海草和鱼制成的混合物浇灌南瓜.

No, I'm an amateur. But I am a sports fan and exercise every day.

不是, 我是业余选手. 但我是个体育爱好者,每天做许多运动.

The sports fan is, by nature, a forgetful creature . And why shouldn't he be?

体育球迷天生健忘, 为什么他会这样 呢 ?

I'm not a sports'fan.

我不是体育迷.

Candice : I need it for my sports. I am an X-sports fan.

坎迪斯: 用来做运动的, 我是极限运动的爱好者.

Any interesting news? I forget that you are truly a sports fan.

有什么新闻 吗 ?我忘了,你一直是体育迷啊.