sputtering source的用法和样例：
例句
- Due to the small size of most sources, placing the symbol directly on the source might not be feasible.
由于大多数射源的尺寸都很小，不易直接将本辅助警示标志贴在射源上。 - The symbol shall be closely associated with the device housing the source, as a warning not to dismantle the device or get any closer to the source.
本辅助警示标志应与装置中射源的外罩紧密组合，以做为不得任意拆除装置或不得更接近射源的一种警告措施。
