According to the EX i explosion-proof request on field bus used in coal mine, improved uniform power supply is adopted. Power supply adapter and communication adapter is designed also.
针对煤矿对现场总线本质安全防爆的要求，采用了改进的统一供电法，设计了电源适配器和通讯适配器。
Ex: "I have worked 70 hours this week. I am dog tired".
例句：我这周工作了70个小时。我都累趴下了。
Ex: : "I have worked 70 hours this week. I am dog tired".
例句：我这周工作了70个小时。我都累趴下了。
Ex: I envy Xiao Li her large vocabulary.
我羡慕小李词汇量那么大。
EX: I was awakened by a frightful clap of thunder.
例：我被一声可怕的雷声惊醒。
EX: I must tell you that I have not come to any decided opinion respecting him, but I think him a Maltese.
例句：我只能告诉您，我对他还没有什么明确的看法。但我认为他可能是个马耳他人。
Ex: "I have worked 70 hours this week."
例句：我这周工作了70个小时。
Ex: "I have worked 70 hours this week."
例句：我这周工作了70个小时。
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