Prototyping is a more hands-on type of modeling that can involve a mock-up, test-of-principle, or actual working version of a specific area of the design.
原型是一种非常有帮助的建模类型，它可以用于模拟，原理测试，或者设计的特定方面的实际工作。
The design and type of switching CARDS used in an IR test system depend on several factors, including the test voltage, magnitude of resistance, accuracy, com mon connection, etc.
IR测试系统中采用的开关卡的设计和类型取决于多个因素，包括测试电压、电阻数量级、准确度、共用连接，等等。
This paper describes general structure design and structure load test of girder type railway bridge erecting machine with single simple supported beam and overhead transversely travelling trolley.
本文介绍我国一种新型单梁简支空中横移梁式铁路架桥机的总体结构设计及其结构荷载试验。
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