它由一組行星齒輪繞著一個軸上傳輸轉動力。手把輸入旋轉運動，帶動行星齒輪組繞著軸運動。 如果軸固定不動，行星齒輪組本身做相對運動傳輸旋轉動力。 This is a planetary gear revolving around a shaft transmitting power. The handle inputs rotation that drives the planetary gear around the shaft. If the shaft is fixed, the gears revolve around each other.
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如果軸固定不動，行星齒輪組本身做相對運動傳輸旋轉動力。
This is a planetary gear revolving around a shaft transmitting power. The handle inputs rotation that drives the planetary gear around the shaft. If the shaft is fixed, the gears revolve around each other.