While for the equipment structure, they were the sectional area of nozzle, the pitch between screw and its turnbuckle, clearance, rotate speed, and the depth of the whorl on the turnbuckle.
就设备的结构而言：喷嘴的截面积、螺杆与螺套的螺距、间隙、转速、螺套螺纹的深浅是影响膨化度的主要因素。
While for the equipment structure, they were the sectional area of nozzle, the pitch between screw and its turnbuckle, clearance, rotate speed, and the depth of the whorl on the turnbuckle.
就设备的结构而言：喷嘴的截面积、螺杆与螺套的螺距、间隙、转速、螺套螺纹的深浅是影响膨化度的主要因素。
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