试验主持人发现，复合物和汞齐修复术的不良作用并无差异。

The investigators found no difference in adverse effects between composite and amalgam restorations.

youdao

试验主持人发现，复合物和汞齐修复术的不良作用并无差异。

The investigators found no difference in adverse effects between composite and amalgam restorations.

youdao