Double extension tripods are ideal for a much wider variety of applications, due to their expanded height range, i. e. lower bottom and higher top positions.

双重引伸三脚架为应用更广的品种是理想的，由于他们膨胀的高度范围，即。降低底下和更高的顶面位置。

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Double extension tripods are ideal for a much wider variety of applications, due to their expanded height range, i. e. lower bottom and higher top positions.

双重引伸三脚架为应用更广的品种是理想的，由于他们膨胀的高度范围，即。降低底下和更高的顶面位置。

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