Using this conceptual classification, operations support systems produce a variety of information products for internal and external use.
利用这一概念分类，运营支持系统产生的各种信息产品，供内部和外部使用。
According to connection method classification (1) threaded connection valves: valve with internal thread or external thread, and pipe thread connection.
按连接方法分类(1)螺纹连接阀门：阀体带有内螺纹或外螺纹，与管道螺纹连接。
Here a new classification of motivation is built up, which divides motivation into internal motivation and external motivation.
在这两种分类的基础上，一种新的分类应运而生，即将动机分为内部动机和外部动机。
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