The optimization rule on the layout and serration of the compact range was referred to, then the optimization algorithm was performed and the result was given.

A research on cracked failures of fir-tree serration in aeroengine turbine disc

航空发动机涡轮盘榫齿裂纹故障研究

The percentage of sharply circle, sparsely serration and triangular extension Z-lines were 25.0%, 58.3% and 16.7% respectively in the control group.

正常对照组仅有锐利环型、宽齿型、三角延伸型，分别占25.0%、58.3%和16.7%。

Tighten the internal serration screw on the exhaust sprocket.

拧紧排气链轮上的内角螺钉。

Using the wrong combination will result in a bad connection between crankset and bottom bracket and may lead to a damaged serration of your crankset.

如果硬要这样配合使用，牙盘和中轴之间结合的会很糟糕，可能会导致牙盘的花键损坏。

A study of reason of first firtree serration cracking failure at turbine blade

涡轮叶片枞树形榫头第一榫槽裂纹故障原因的探讨

After testing the growth of four kinds of Morchella, We knew that in a limited period, mycelial growth graph showed serration while cultural time extended.

对其生长曲线进行测定，结果表明，在一定的时间内，随着培养时间的延长，4种羊肚菌的菌丝生长曲线呈现锯齿状特点。

Why did Ukrainian air traffic controllers allow the plane to deviate from the regular route to the north, towards the anti-terrorist operation zone?

乌克兰空管部门为何允许马航客机偏离常规路线，向北飞到反恐行动区？

Although they are known for their long migrations, grey whales do not normally stray from their regular routes.

虽然大家都知道它们有一个很长的迁移，但是灰鲸还是非正常地偏离了他们的常规路线。

The research and development of super-fine fiber is the mainstream tendency in differential polyester filament. The normal process ( POY-DTY) takes more advantage than others, and has enough economic profit.

超细纤维的研制与发展是差别化涤纶长丝的一个主流方向，使用POY-DTY常规路线加工比其它生产方式具备多方面的优势，存在丰厚的经济利益空间。

But there also quite a few people who would like to work in a small-sized enterprises suitable for their own development rather than choose the causal career developing way.

但还有很大一部分人不愿走常规路线，他们更钟情于适合自身发展的小型企业。

The points for attention in designing the serration axle are pointed out.

指出了渐开线螺旋花键轴几何尺寸设计时应注意的问题。

Sea , land and air transportation is very convenient, and communications network facilities is quite perfect.

海陆空交通运输非常便捷, 通讯网络设施完善齐全.

It acts as an agency of international marine and air transportation of import and export cargoes.

承办海运、空运进出口货物的国际运输代理业务.

Any substance which presents a danger during air transportation that is not covered by other classes.

任何物质在运输途中,呈现其他类危险货品所未涵盖之危险.

Application of EDI in foreign trade, customs and air transportation at the end of 1990.

1990年底,中国的电子商务首先从应用EDI( 电子数据交换)开始,主要集中在外贸 、 海关及航空运输等领域.

International logistics: The transportation act for, sea-air transportation, the price of air freight of the advantage.

国际物流: 海运代理, 海空联运, 优势的空运价格.

Sea, land and air transportation go hand in hand, water, electricity, roads, communication facilities improved.

海 、 陆、空立体交通齐头并进, 水 、 电 、 路 、 通讯等设施不断完善.

It is very convenient for the road, rail and water and air transportation.

我厂处于广东珠三角发达城市广州,公路, 铁路,海运,航空交通十分便捷.

With the development of modern air transportation, more and more controllers are needed continuously.

随着航空运输业的不断发展, 迫切需要更多的管制员.

Water, land as well as air transportation are well developed now.

现在这里的水陆空交通都比较发达.