Sentence:  The observed intensity of the radio emission of Venus is much higher than the expected thermal intensity , although the spectrum indicated by measurements at wave lengths near 3 cm and 10 cm is like that of a black body at about 600 ` <WSD>K</WSD> . 
Meaning of the word marked with <WSD> tags:  the basic unit of thermodynamic temperature adopted under the Systeme International d'Unites