With time and patience the mulberry leaf becomes a silk gown.
只要有时间和耐心，桑树叶子会变成绸大褂。
A mulberry leaf touched with the genius of man becomes silk.
一片桑树叶依靠天才人物成为丝绸。
It's reliable, practical and convenient to control the sucking silk of tobacco leaf equipment by PLC.
用可编程序控制器PLC对吸烟丝设备进行控制，具有可靠，实用，方便的特点。
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