这个人在经过反复实验后设计出了一种新的信件处理系统。
The man devised a new system for handling mails after experimenting many times.
ABS轮速信号处理电路性能的优劣直接关系到系统的控制效果，因而需要反复设计和实验验证。
The performance of signal process circuit of ABS wheel velocity directly works on the control effect of the system, so designs and tests need to be repeated.
该机是我厂在消化和吸收国外同类产品的基础上，经过本公司反复实验后设计成的一种高温染袜及布匹特殊处理机。
This machine is one kind of high temperature sock dyeing machine that is designed on the basis of digesting and absorbing the foreign alike product and after repeatedly testing in our company.
该机是我厂在消化和吸收国外同类产品的基础上，经过本公司反复实验后设计成的一种高温染袜及布匹特殊处理机。
This machine is one kind of high temperature sock dyeing machine that is designed on the basis of digesting and absorbing the foreign alike product and after repeatedly testing in our company.
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