【经】 proof of performance
contract
【化】 contract; pact
【经】 compact; contract
afterwards; already; end; stop; too
carry out; fulfil; go through; implementation; perform
【经】 execution; implement; perform
prove; certify; argue; demonstrate; justify; manifest; testify; vouch
【计】 proofness; proving
【化】 proofing
【医】 certificate; certify; proof
【经】 attest; attestation; authenticated; authentication; certification
certify; testimony