自发性小脑血出血
Spontaneous hemorrhage of cerebellum
必然与偶然
necessity and contingency
测量偶然误差
random error of measurement
电子传递与质子泵出偶联
coupling of proton pump out and electron transfer
coupling of proton pump out and electron trans fer
荷载效应偶然组合
load effect accidental combination
空气偶然漏入
accidental admission of air
偶偶超重核
even-even superheavy element