Word

HSK	Not in HSK
FREQUENCY	Unknown

正电子发射层析 zhèng diàn zǐ fā shè céng xī

正 zhèng HSK 2	right, proper, correct
电 diàn HSK 1	electricity; electric; lightning
子 zǐ HSK 1	offspring, child; fruit, seed of; 1st terrestrial branch
发 fā HSK 3	issue, dispatch, send out; hair
射 shè HSK 5	shoot, eject, issue forth, emit
层 céng HSK 3	story, layer, floor, stratum
析 xī HSK 5	split wood; break apart; divide