遗憾的是，这种离子交换技术所捕获的非放射性铁离子比放射性钴离子还多得多。
Unfortunately, the ion-exchange technique traps many more non-radioactive iron ions than radioactive cobalt ones.
遗憾的是，这种离子交换技术所捕获的非放射性铁离子比放射性钴离子还多得多。
Unfortunately, the ion-exchange technique traps many more non-radioactive iron ions than radioactive cobalt ones.
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