求翻译：工人通过天车等将带卷放到上料小车鞍座处，小车升高并将带卷自动作业和开卷机卷筒的中心线上，开卷机卷筒由液压张开，使其与卷材内径胀紧。是什么意思？

Workers by crane with the volume on the feeding cart saddle trolley elevated center line and automatic operation and uncoiler roll with volume uncoiler roll open by hydraulic, with coil inner diameter swelling.

By day, workers will be car with the car on the saddle, car lift and volume with automated job and book-roll on the center line, book-roll by the hydraulic, with its inner diameter roll inflation.

The worker and so on puts through the overhead traveling crane the reel to the high-quality goods car saddle place, the car ascension and the reel automatic work and in the unwinding coiler reel middle line, the unwinding coiler reel opens by the hydraulic pressure, causes its and the volume materia

Workers through the overhead travelling crane with volume placed on the car, such as saddles, elevated car and auto jobs, and with volume on the centerline of the uncoiler reel, uncoiler reel by hydraulic opening, make it the volume material inside diameter expansion.

正在翻译，请等待...