The first two lines of assembly code at B0 and B5 load the instance reference from memory location 049388C8 into eax and test for null.

B0 和 B5 处的前两行汇编代码将 instance 引用从内存位置 049388C8 加载至 eax 中，并进行 null 检查。

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After performing the shorts and opens test the in-circuit tester tests each component on a PCB assembly one at a time.

短路、开路测试完成以后，在线测试仪需要在同一时间对印刷电路板上的每一个器件进行测试。

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At present, the hydraulic transmission box test-bed has been applied for the assembly line as a standard measuring equipment and is playing a very important role.

目前，变速箱测试台已作为一种标准的测试设备被使用在生产装配线上并发挥着重要的作用。

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