1)major semi axis,長半軸2)semi-major axis,長半軸3)major semi-axis,長半軸4)semimajor axis of ellipsoid,橢球長半軸，地球長半軸5)Semi-major axis modification,長半軸修正6)semi major axis,長半徑7)long D slide valve,長半園滑閥8)long-radius grating,長半徑光柵9)drawing method of measuring point using half_value of line segment,邊長半值量點法10)long half-life group,長半衰期(元素)組
用法和例句
A practical perspective drawing method, a drawing method of measuring point using half_value of line segment, is put forward.
