I can type a one or two line message in less than half an hour.
我能在不到半小时内打出一到两行消息。
请排成两队。
This is in Book Two, line 249.
第二册书，第249行。
A two - line radar level measurement instrument that supports HART protocol is introduced.
介绍了HART协议在二线雷达物位计中的应用方案。
A two - line radar level measurement instrument that supports HART protocol is introduced.
介绍了HART协议在二线雷达物位计中的应用方案。
应用推荐