時間測定學

chronometry

o'clock / time / when / hour / season / period

time / period / CL:段[duan4]

between / among / within a definite time or space / room / section of a room or lateral space between two pairs of pillars / classifier for rooms

gap / to separate / to thin out (seedlings) / to sow discontent

to survey / to measure / to conjecture

to determine (by measuring or surveying)

to set / to fix / to determine / to decide / to order

to learn / to study / to imitate / science / -ology