Purchasing helium may now account for half of total operating costs at some US labs, leaving little left over for researcher salaries and other expenses.
目前，许多美实验室在购买氦上的投入达总运营资金的一半，只剩很少一部分用来应付科研人员的薪水及其他支出。
Purchasing helium may now account for half of total operating costs at some US labs, leaving little left over for researcher salaries and other expenses.
目前，许多美实验室在购买氦上的投入达总运营资金的一半，只剩很少一部分用来应付科研人员的薪水及其他支出。
应用推荐