The second system USES fixed geographic directions, which do not rotate with us wherever we turn.
第二个使用固定的地理方位，并不随我们本身位置的变化而变化。
Stock model with a Rigid rotor system, the fixed rotor is why it can do aerobatics.
库存模型与刚性转子系统，固定转子就是为什么它可以做的特技。
Fixed a problem with renaming files that do not adhere to the file system limitations.
修正了重命名不遵守文件系统限制的文件问题。
The three force system of the spine and fixed to play the role of traction, so that the spine flexible and flexibility, so that people can do the normal cervical curve, thoracic curve, lumbar curve.
这三个力系对脊椎起到牵引和固定的作用，使脊柱具有弹性和柔韧性，使人们可以做到正常的颈弯，胸弯，腰弯。
The three force system of the spine and fixed to play the role of traction, so that the spine flexible and flexibility, so that people can do the normal cervical curve, thoracic curve, lumbar curve.
这三个力系对脊椎起到牵引和固定的作用，使脊柱具有弹性和柔韧性，使人们可以做到正常的颈弯，胸弯，腰弯。
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