1·They write to give their provisional acceptance of the contract.
他们写信临时接受此项合同。
2·The use of mounted diagnostic casts, diagnostic wax-ups and provisional restorations permits patient acceptance to be obtained before the definitive phase is initiated.
使用安装蒙上诊断，诊断蜡制成品及临时修复允许病人接受之前得到最终阶段是开始。