Sentence:  The rate of oxygen transfer at 1.0 - mg / <WSD>l</WSD> dissolved oxygen concentration and 10 ` C for various rotor speeds is given in Table 3 , . 
Meaning of the word marked with <WSD> tags:  a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints)