Increase the bobbin thread tension.

请调强底线张力.

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Adjust the needle thread tension properly.

请调节上线张力.

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Decrease the bobbin thread tension.

请调弱底线张力.

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The needle thread tension is excessive.

上线张力过强.

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On future production an adjustment to the sewing machine thread tension should be made.

这是为以后的成品调解拉紧裁缝机穿线而做的!

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All Kinds of Gear Wheels , Thread Tension Regulator Association , Poles , Dishes, Screws, and Spring etc.

各种齿轮 、 纱拉组、杆类件、盘类件 、 螺纹件和弹簧等.

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