The pipe material for nozzle neck shall be seamless, unless otherwise approved by Purchaser.
设备口颈部应为无缝管材，除非买方另外批准。
Mike put his pipe down, crossed his hands behind his neck, and turned his face towards the window.
麦克放下烟斗，双手交叉着放在脖子后面，转过头去看窗子。
John put his pipe down, crossed his hands behind his neck, and turned his face towards the window.
约翰放下烟斗，两手交叉放在脖子后面，转过头朝向窗户。
John put his pipe down, crossed his hands behind his neck, and turned his face towards the window.
约翰放下烟斗，两手交叉放在脖子后面，转过头朝向窗户。
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