But repairing Super-K will be a mammoth task, and a complete restoration would take years: only about 1,500 replacement photomultiplier tubes are available, and production of these $3,000 devices ceased four years ago.
But repairing Super-K will be a mammoth task, and a complete restoration would take years: only about 1,500 replacement photomultiplier tubes are available, and production of these $3,000 devices ceased four years ago.
然而修复超级神冈工程浩瀚，要完全复原更得拖上数年：因为目前只有1500根可供替换的光电倍增管，而且这些一根要花上3000美元的设备早在四年前便停产了。