它应用低压水的机械冲洗想晓得旋转式电动牙刷作旋转式刷牙法(roll method ):从牙龈返牙冠方向旋转刷。刷前牙唇面、后牙颊面跟后牙舌腭面看着日本牙刷时,牙刷毛束的尖端朝向牙龈,
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rear roll method 后滚法
twin-roll method 双辊法
twin roll method 双辊法
double roll method 双辊压延法
upright roll method 立卷方法
They also have hopes that when the efficiency of the amorphous silicon photovoltaic cells improves in the future, it may become possible to mass-produce the si PV cells by using a roll-to-roll method.
他们希望将来，当非晶态硅光伏电池的光电转化效率提高后，能利用卷到卷式的生产方式进行大规模的硅光伏电池的生产。
The instanceof function provides a good way of checking type, but you can also roll object type checking into the method signature itself by using type hints in the argument list.
虽然 instanceof 功能提供了一种检查类型的好方法，但您还可以通过在参数列表中使用类型提示，来将对象类型检查滚动到方法签名自身中。
Once all the updates are performed you can invoke the commit method to commit the transaction, or the rollback method to roll back the transaction. Listing 5 illustrates this technique.
执行了所有更新之后，您可以调用commit方法来提交事务，或者调用rollback方法来回滚事务。
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