This particular board also operated over a broad temperature range without a cooling fan.
这块系统板不用制冷风扇就可以在温度变化很大的环境中使用。
2
Some scientists like Donald Oilman, chief of the National Weather Service's long-range-prediction group, think that the cooling trend may be only temporary.
国家气象局的负责人Donald Oilman和其他一些科学家们认为，这种变冷趋势只是暂时的。
3
Hardening. This is the process of heating to a temperature above the critical range, and cooling rapidly enough through the critical range to appreciably harden the steel.