北极星任意时角法
method by hour angle of Polaris
全组合测角法
method in all combinations
method of angle observation in all combination
method of angle observation in all combinations
偏角法
Deflection angele method
method of deflection angle
method with deflection angle
deflection angle method
deflection-method
排列常角法
permutation ruled angle method
水平夹角法
horizontal sextant angles method