随着航空发动机技术的发展，对滚珠轴承的速度特性要求也越来越高。
With the development of aeromotor technology, more strict speed performance of ball bearing is required.
小滚珠的临界速度，也许是每秒几百米。
Well, this critical speed for a small ball bearing would be some hundred meters per second.
这里是速度，这里是滚珠的半径。
Here you see the speed, and here you see the radius in meters of the ball bearings.
潜艇船身上崩掉了一个滚珠轴承。
不是半径，而是这些滚珠的直径。
Not the radii but I will give you the diameters of these ball bearings.
移动部件均由进囗滚珠丝杆及直线构成。
Moving parts are imported of ball screws and straight line rail.
我们测量了，这些滚珠下降，4cm所用的时间。
What we did is we measured The Times for these ball bearings to fall over a distance of four centimeters.
如果你能让滚珠，有这么高的速度，这两项就会相等。
If you could give the ball bearing such a high speed, then the two terms are equal.
选择滚珠除臭剂和美容产品而不是喷雾罐。
Opt for roll on deodorant and beauty products rather than aerosol cans.
当汽车倾倒时，滚珠迫使柱塞落在支承板上。
With the car upside - down, the ball forces the plunger to seat against the guide plate.
现在的问题是，如果滚珠开始下落，会达到多大速度呢？
And so the question now is, if this ball bearing starts to fall, what is the speed that it will achieve?
轴承的设计可以作为辅助或滚柱轴承滚珠轴承。
Slewing bearings can be designed as ball bearings or roller bearings.
为确保高速，采用陶瓷滚珠轴承与主轴斜向接触。
Spindle support on ceramic balls bearings at oblique contact for high speed.
滚珠的临界速度，是每小时100英里，低得多。
The critical velocity of the Karo syrup would be 100 miles per hour for a quarter-inch ball bearing.
活动部件是由合金钢制成，并且在滚珠轴承上运行。
The moving parts are made of alloy steel and run on roller bearings.
目标购买了背包、压力锅、钉子、滚珠轴承和电子表。
Our targets purchased backpacks, pressure cookers, nails, ball bearings, and digital watches.
我们用滚珠实验-,记得吗？,我们做了一些大型试验。
We dealt exclusively with spheres-- remember? And we did some huge experiments.
它们在液体中-，这是液体，这是，要放入液体的滚珠。
They are in the liquid — So here is the liquid, and the ball bearings are dropped from above.
现在我们要看看，不同的滚珠，不同的尺寸，我将展示该如何实验。
Now we are going to look at the various ball bearings, the various sizes, and I'll show you how we do the experiment.
这个例子好一些：“Widgets公司生产各种大小的滚珠轴承。”
This is better: "Widgets, Inc. provides ball bearings of all sizes."
该指南杆和轴承系统的负载，同时支持的滚珠丝杠驱动器的负载。
The guide rod and bearing system support the load while the ball screw drives the load.
此类轴承可以分离成三片，两个垫片都有供滚珠滚动的圆弧状深沟。
These bearings can be separated into three, two pads are arc-shaped for deep groove ball rolling.
为了增加接触面积并承受较大载荷，滚珠在内外环的曲线槽内滚动。
To increase the contact area and permit larger loads to be carried, the balls run in curvilinear grooves in the rings.
滚珠丝杠都是由高水平的机械设备连贯生产出来的，制作精度更高。
Ball screw is produced by high-level mechanical equipment coherent production, higher precision.
另外，滚筒在外筒里转动时，洗衣机上不合格的滚珠轴承给它施加了额外的压力。
The washer also comes with substandard ball bearings that put additional pressure on the drum while it spins inside the tub.
气动伺服副翼由整体坯料加工而成，设计在转臂上有自动对准滚珠轴承。
The design of the aero servo aileron hinges are machined from solid billet and have a self aligning ball bearing pressed into the arm.
1923年，勉强避开破产之后，一个滚珠轴承巨擘阿尔弗雷德·斯隆接管了通用。
In 1923, after narrowly avoiding bankruptcy, Alfred Sloan, a ball-bearing magnate, took over the running of GM.
我们现在拿其中一个举例，是直径为1/4英尺的滚珠,它的质量是,0。
If we take the one for now, which is a quarter-of-an-inch diameter, then the mass of 1g that one is about 0.1 grams.
承蒙意大利商业银行告知贵公司名称和地址，并告知贵方欲购进滚珠轴承。
We owe your name and address to Italian Commercial Bank who has informed us that you are in the market for ball-bearing.
承蒙意大利商业银行告知贵公司名称和地址，并告知贵方欲购进滚珠轴承。
We owe your name and address to Italian Commercial Bank who has informed us that you are in the market for ball-bearing.
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