Albumin-bound Paclitaxel Combined With Gemcitabine First-line Inoperable Pancreatic Cancer

Experimental:Albumin-bound paclitaxel combined with gemcitabine was administered on the first and eighth day, a cycle of three weeks Active Comparator: Albumin-bound paclitaxel combined with gemcitabine was administered on the first, eighth, and fifteenth days, with a four-week cycle