The way double polarity s function and LM algorithm combine with BP neural network is analyzed in the paper. The steps of new algorithm were given.
分析了双极性S型函数及LM算法与BP神经网络具体结合实现的方法，并给出了算法步骤。
Through research a new multifunctional double screw arbor extruder was invented. It could be used as both one-way double screw arbor extruder and two-way double screw arbor extruder.
本文研究开发了一种多功能新型双螺杆挤出机，其特点是既可以作为同向双螺杆挤出机使用，又可作为异向双螺杆挤出机使用。
Through research a new multifunctional double screw arbor extruder was invented. It could be used as both one-way double screw arbor extruder and two-way double screw arbor extruder.
本文研究开发了一种多功能新型双螺杆挤出机，其特点是既可以作为同向双螺杆挤出机使用，又可作为异向双螺杆挤出机使用。
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