柠檬酸盐阳性

correlate positively───正相关

contrapositive───adj.对换的；对照的；n.对换句

transpositive───换位

Gram-positive───革兰氏（染色）阳性

chart position───图表位置

contrapositives───反阳性

diapositive───n.透明正片

reaction, inorganic nitrogen sources utilization and citrate utilization, the results were positive. Nitrate reduction experiment presented positive largely.───反应、无机N源利用、柠檬酸盐利用呈阳性，硝酸盐还原试验大多呈阳性；

• citrate ion
• citrate positive
• citrated kaolin
• citrate test