楼上光机译
plus minus,times divided；square;square root;cube;cube root;radical;variance ;square deviation ;cylinder;tri-prism ; cone ;third pyramid ; trapezoid;parallelogram;rhombus;quadrilateral;function ;一次函数找不到；quadratic function; direct proportional function;inverse proportion function;geometry ;algebra;cartesian coordinate system
;origin;natural number;real number ;pressure;pressure; force; friction
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