请翻译 我们注意到本次修理更换了一些部件比如sliding piece one sleeve O-rings gasket back up ring oil seal four sliding blocks locking plate rung spacer locking wires spacer ring plugs shim and seven sleeves 我们现场并未发现这些部件有肉眼

We noticed that some components were replaced during this repair, such as the sliding piece, one sleeve, O-rings, gasket, back up ring, oil seal, four sliding blocks, locking plate, rung spacer, locking wires, spacer ring, plugs, shim, and seven sleeves. We did not find any visible damage to these parts on-site, and we believe their replacement was due to excessive wear or reaching the end of their service life rather than being caused by an accident. Therefore, we believe this repair is related to the scheduled dry-docking.