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(2) Multiple factory method modes?紫茄黑眼睛一闪。Define the interface first:Network firewall: It is often located at the entrance or edge of the network, and is protected against the entrance of the network and serves the local LAN behind the firewall.Industry 4.0 proposed by Germany has three major themes: first, intelligent factories, focusing on intelligent production systems and processes, and the realization of networked distributed production facilities; The second is intelligent production, which mainly involves the production logistics management of the whole enterprise, human-computer interaction and the application of 3D technology in the industrial production process. The third is intelligent logistics, which integrates logistics resources mainly through the Internet, the Internet of Things and the Internet of Services to give full play to the efficiency of existing logistics resources.就在这时，一柄长三尺，剑身两面，一面刻日月星辰，一面刻山川草木，剑柄两面，一面书渔牧农耕，一面书圣人教化之篇章的宝剑，从天外飞来。