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
modified-roll method 变性法加工
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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