变螺距螺旋 meaning in Chinese

variable pitch auger
variable-pitch auger

This paper puts forward a new bulk taking equipment project - screw and gas sucking - taking equipment , first the paper analyses the movement of bulk material in the screw slot , and analyses the materials movement law under the influence of the varitational room between screws and the airflow qualitatively , establish the equation of movement of the stream of gas and solids bulks in screw slot and build up the law of material vertical transportation and airflow radial speed distribution in screw slot
论文提出一种新的散货取料装置方案? ?螺旋气力吸取料装置，论文从物料在螺旋槽中的运动分析开始，定性分析了物料在变螺距螺旋空间和气流共同作用下运动规律，建立了物料与空气沿螺旋槽输送的运动方程，确定物料的垂直输送速度与气流速度在螺旋槽内的径向分布规律。