To Evaluate the Safety, Efficacy and Kinetic Characteristics of TRD205 Tablets for Postoperative Analgesia After Unilateral Hip Arthroplasty

Administered orally every 12 hours for a total of four times；Take TRD205 2 tablets and Placebo 4 tablets for the first time ，TRD205 1 tablets and Placebo 2 tablets each for the other three times

Administered orally every 12 hours for a total of four times；Take TRD205 4 tablets and Placebo 2 tablets for the first time ，TRD205 2 tablets and Placebo 1 tablets each for the other three times.

Administered orally every 12 hours for a total of four times；Take TRD205 6 tablets and Placebo 0 tablets for the first time ，TRD205 3 tablets and Placebo 0 tablets each for the other three times.

Administered orally every 12 hours for a total of four times；Take Placebo 6 tablets for the first time ，Placebo 3 tablets each for the other three times.