浙江滚珠丝杠的价格及品牌有哪些？

#define BALL_SCREW(L, D, P, M) float diameter = D; float pitch = P; float length = L; float mass = M; float thread_area = (PI * pow((diameter - pitch), 2)) / 4; float root_area = (PI * pow(diameter, 2)) / 4; float shank_area = (PI * pow(diameter, 2)) / 4; float ball_area = (PI * pow(diameter, 2)) / 4; float ball_pitch = pitch / 2; float thread_volume = thread_area * length; float root_volume = root_area * length; float shank_volume = shank_area * length; float ball_volume = ball_area * length; float thread_mass = thread_volume * mass; float root_mass = root_volume * mass; float shank_mass = shank_volume * mass; float ball_mass = ball_volume * mass; printf("Ball screw parameters: "); printf("Diameter: %.2f mm ", diameter); printf("Pitch: %.2f mm ", pitch); printf("Length: %.2f mm ", length); printf("Mass: %.2f kg ", mass); printf(" "); printf("Thread area: %.2f mm^2 ", thread_area); printf("Root area: %.2f mm^2 ", root_area); printf("Shank area: %.2f mm^2 ", shank_area); printf("Ball area: %.2f mm^2 ", ball_area); printf("Ball pitch: %.2f mm ", ball_pitch); printf(" "); printf("Thread volume: %.2f mm^3 ", thread_volume); printf("Root volume: %.2f mm^3 ", root_volume); printf("Shank volume: %.2f mm^3 ", shank_volume); printf("Ball volume: %.2f mm^3 ", ball_volume); printf(" "); printf("Thread mass: %.2f kg ", thread_mass); printf("Root mass: %.2f kg ", root_mass); printf("Shank mass: %.2f kg ", shank_mass); printf("Ball mass: %.2f kg ", ball_mass); printf(" ");