写真素材 - Beam pumping unit, also called a crank balanced beam pumping unit, the beam pumping unit, refers to the beam, through linkage reversing, crank weight balanced pumping unit, commonly known as KeTouJi.
作品情報
Beam pumping unit, also called a crank balanced beam pumping unit, the beam pumping unit, refers to the beam, through linkage reversing, crank weight balanced pumping unit, commonly known as KeTouJi.
- ID：34349435
- 作品種別：写真
- 作者名：Wang Aizhong
キーワード
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