This Contract shall not be changed verbally, but only by a written instrument signed by the Parties.
本合同以口头修改，而须经双方签署书面文件后方可修改。
This Agreement may be amended only by written instrument signed by both Client A nd Design Consultant.
本协议的修改只能通过业主与设计顾问双方签署的书面同意文件进行。
This Agreement shall not be modified or amended except by a written instrument, signed by the parties hereto.
除非双方当事人共同签署书面文件，否则本“协议”不得修改或修订。
This Agreement may be amended only by a written instrument signed by duly authorized representatives of both parties.
本合同只有经双方当事人授权的代表正式签署的书面文件，方可修改。
This Agreement may not be changed, modified, amended or supplemented except by a written instrument signed by both Parties.
本协议不可被改变、修改、修订或补充，双方以签订书面文件的形式除外。
On the design of the instrument software, because the computer data process system of the first and second kinds of products run in the DOS environment, which is written by the language of the BASIC.
在仪器的软件设计方面，由于第一和第二代产品的计算机数据处理系统是运行在DOS环境下，用BASIC语言编写的程序。
No mortgage instrument shall be registered except with the prior written consent of all the holders of mortgages then registered against the ship concerned.
除非事先取得所有在有关船舶名下注册的抵押持有人的书面同意，否则不得将任何抵押文书注册。
That we shall not accept any amendment to or cancellation of the instrument without your prior written consent;
未经贵行事先书面同意，本公司不得接受对票据的任何修改和取消；
That we shall not accept any amendment to or cancellation of the instrument without your prior written consent;
未经贵行事先书面同意，本公司不得接受对票据的任何修改和取消；
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