... single-ram intensifier ==> 单柱塞增压器 single-range ==> 单波段的 single-range indicating instrument ==> 单量程指示仪表 ...
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PAR通常由单波段的PAR传感器直接测量，也可以由多光谱数据计算。
PAR is usually measured by a single band sensor and can also be calculated by multispectral data.
单人QRP(全波段或单波段)组：单人完成所有通联操作及日志记录。不允许使用任何形式的辅助手段。总发射功率不超过5瓦。
Single Operator QRP (all Band or Single Band) : One person performs all of the operating and logging functions. QSO alerting assistance is not permitted. Total output power must not exceed 5 watts.
单人低功率(全波段或单波段)组：单人完成所有通联操作及日志记录。不允许使用任何形式的辅助手段。总发射功率不超过10 0瓦。
Single Operator Low (all Band or Single Band) : One person performs all of the operating and logging functions. QSO alerting assistance is not permitted. Total output power must not exceed 100 watts.
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