Enlarged mass-mass diagram for PSR J1946+2052. To demonstrate the influence introduced by the LT effect, we display the total mass constraint for ${\dot{\omega }}_0$ with black dashed lines, where we ignore the LT contribution. The black solid lines represent $\dot{\omega }$ with the full contribution, including the 2PN and LT effect. The significant deviation between ${\dot{\omega }}_0$ and $\dot{\omega }$ indicates that the LT contribution significantly affects our measurement of the total mass. The magnitude of this shift depends on the MOI of the pulsar. Owing to the much larger uncertainty of Ṗ_b, the total mass cannot be measured independently with sufficient precision to determine the MOI.