Voluntariness of confession自由的任意性
Free And Voluntariness自由而随便
The principle of voluntariness自愿原则
Voluntariness of Use自愿使用
voluntariness and equality自愿公平
the voluntariness of will意志自由
voluntariness and mutual benefit自愿互利原则
free will voluntariness自由意志
principle of voluntariness自愿
Formal verification is consisted of the procedural safeguards and proof of voluntariness, in order to determine the form of voluntary confession.
形式化查证由程序保障规则与任意性证明两部分构成,以此确定任意自白形式。
参考来源 - 论自白任意性标准（研究生论文）