price breakdown:价格细目表
advance payment guarantee letter:预付款保证书
performance bond:履约保函
warranty bond:保固保证
letter of credit:信用证
insurance certificate：保险证明书, 保险凭证
copys:副本
model text:样本，模板
PAC(Provisional Acceptance Certification) ：临时验收
Commercial Operation：商行运行
force majeure：不可抗力
Liquidated Damages：违约赔偿金
Liquidated Damages for Delay：延期违约赔偿