运行于非受管环境下的应用程序必须显式提交或回滚事务。
An application running in a non-managed environment must explicitly commit or rollback transactions.
特别适用于中空管状螺纹加工，如油管接头、自行车、汽机车零件、散热管、牙管等滚牙加工。
Especially for tubular thread processing, such as pipe fittings, bicycle, motorcycle parts, heat pipes, tubes and other dental rolling processing.
在连续富集和每次滚管中对增加青霉素进行了比较试验。
In the experiments of continuous enrichment and rolling tube we compared the effects of penicillin.
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