As you can see, along the length of the hair, there are three main parts called the bulb, the root and the shaft.

如你们所见，顺着头发的长度可以分为三个主要部分，分别是毛囊、毛根和毛干。

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Finding involved inadequate corrective actions to prevent repeat failure of the number nine main crank shaft bearing on emergency diesel generator number one.

发现物涉及到不充分的，纠正措施，用来避免重复的失效，那是关于，9号大曲柄轴，在第一号柴油机。

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The rotor is connected to the main shaft, which spins a generator to create electricity.

这个转轴是连接到可以转动发电装置发电的主转轴上的。

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The incident was caused by a cracked shaft in the main gearbox.

BBC: Super Puma grounding hits Aberdeen air traffic

The mine was shut down by the U.S. Mine Safety and Health Administration due to the unsafe buildup of sand and concrete material in the main shaft of the mine.

FORBES: Hecla's Lucky Friday Mine Rehabilitation Slightly Ahead Of Schedule, Restart In Early 2013

He started with the small quatrefoil lights of the Holy Spirit and the crucifixion, proceeding down through the main panels of Christ and his followers on the mountain, with all the way the white shaft of God's transfiguring light growing broader through the fire-and-storm colours of the glass.

ECONOMIST: Michael Lassen