氢氧自由基(OH)在对流层大气化学中起着重要的作用，因此，对其浓度的测量具有重要意义。
Hydroxyl radical (OH) plays a key role in the tropospheric chemistry, so the measurement of its concentration is very important.
电源系统在全弹中起着重要作用，全面、准确地测试电源系统的性能有着重要意义。
The power supply is an important part in the missile system, the measurement of the power supply should be performed accurately and comprehensively.
电源系统在全弹中起着重要作用，全面、准确地测试电源系统的性能有着重要意义。
The power supply is an important part in the missile system, the measurement of the power supply should be performed accurately and comprehensively.
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