手动：可以向J VM发送一个信号，要求JV m生成堆转储。

Manually: You can send a signal to the JVM asking it to generate a heap dump.

youdao

暗示星期二下午这场事故发生的第一个信号就是，地铁系统员工在信号指示失败后立刻转为手动操作。

The first indication is that Tuesday afternoon's crash occurred after the metro system staff had switched to manual scheduling following a signal failure.

youdao

有了这一模块，用户可以手动调试设置信号和测试安装及设备。

With this module, users can manually set signals for commissioning and testing installations and devices.

youdao