B4型大功率工业齿轮箱B4 type high-power industrial gearbox
B3型大功率工业齿轮箱B3 type high-power industrial gearbox
B2型大功率工业齿轮箱B2 type high-power industrial gearbox
H4型大功率工业齿轮箱 H4 type high-power industrial gearbox
H3型大功率工业齿轮箱 H3 type high-power industrial gearbox
H2型大功率工业齿轮箱 H2 type high-power industrial gearbox
H1型大功率工业齿轮箱 H1 type high-power industrial gearbox