1. 翻译成英文：“本合同书的有效期限为”
The term of validity for this contract is :upon the signature by both parties to March 31,2011.
2. “合同有效期3年”用英语怎么说在线等！！
the contract expires within 3 years
3. 急！！"合同期"英文怎么说
合同期间：contract period
合同期满：expiration of contract period
4. 在本协议有效期内 英文怎么说
During the effective period of this agreement
或During the term of the agreement
两个都行
5. 标题为“合同期限”翻译成英文是什么
合同期限
Contract Term
属类：【商务文书】-〖合同〗
6. 协议期限 用英语怎么说
协议期限 The Term of Agreement.
属类：【商务文书】-〖合同协议〗
7. 英语翻译：在协议的有效期内或协议终止后 英语
During and/or after the agreement, the Second Party shall not divulge technical materials of procts and confidential commercial information of the First Party, as well as terms of the agreement.
8. 英文版权协议的日期怎么写
第一空,填日,序数词,如6th,30th
第二空,填月,January,February
如,effective this 18th day of December,2006
9. 协议期满后，双方可协商续签 英语怎么说
The both parties can renew the agreement on its expiry through negotiation.