此函数让客户端感知实现类工厂的模块。为什么这样做呢？

This function lets the client keep alive the module that implements the class factory object.

youdao

在感知网络的多种应用当中，比如对工厂或农场里的器材、原料及产品进行监测时，尘粒的配置可能经常变动。

For many applications of perceptive networks-monitoring equipment, raw materials, and products in a factory or on a farm, for example-the arrangement of motes will be constantly changing.

youdao

在感知网络的多种应用当中，比如对工厂或农场里的器材、原料及产品进行监测时，尘粒的配置可能经常变动。

For many applications of perceptive networks-monitoring equipment, raw materials, and products in a factory or on a farm, for example-the arrangement of motes will be constantly changing.

youdao