The article takes the turret head type placement system as a example, fully analyses several familiar highspeed placer's failures and summarizes some valid measures to eliminate them.

以转塔式贴片机为例，对高速贴片机中常出现的几种故障现象进行了较全面的分析，并总结了一些有效的解决措施。

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The spindle structure of milling head type machine tool is made up of multi-elements and complex bearing, thus the dynamic characteristics will be influenced.

铣头式机床的主轴是多组件、复合支承的特殊结构，影响机床动态性能。

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Having any allergy was associated with a 59% reduced risk of any type of head and neck cancer, the study found.

WSJ: Music Ability Helps Reading

As he probably suspected, the research revealed he had the type of head trauma from repeated hits that can lead to depression, which can lead to suicide.

FORBES: Connect

How should we look at what Google did better, and should we expect to see it head for an Apple-type level of execution?

FORBES: Google's Next Triumph