11.   The statement Monday said authorities will investigate what caused the leak after the steam generating system cools down.

n. + system >>共 804
computer 5.46%
school 2.85%
defense 2.63%
missile 2.33%
justice 2.00%
pressure 1.82%
tax 1.74%
security 1.68%
cable 1.60%
control 1.49%
steam 0.03%
steam + n. >>共 133
locomotive 9.44%
room 9.24%
generator 7.63%
train 7.43%
pipe 3.41%
power 3.21%
shower 2.61%
heat 2.61%
system 2.21%
car 2.01%
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