credit card touching ground technique

face-changing technique

idealized technique

(14)C labeled technique

.NET technique

^15N tracer technique

~(13) C labelling technique

~(137)Cs technique

~(137)Cs tracer technique

~(15)N tracer technique

~(15)N tracing technique

~1H NMR technique

’Pre’ technique

“CLEAN” technique

“Three high and on steady” culture technique

∑△DAC technique

137 Cs technique

137Cs technique

137Cs trace technique

137Cs tracer technique