No simple non-recursive procedural expression accesses all elements, although many libraries include helper functions for walking the tree.
简单的非递归过程表达式并不能访问所有的元素，尽管许多库都包含有帮助功能，可以用于遍历树。
2
Because SQL is a non-procedural language, a single statement can take the place of a series of procedures.
因为SQL是一种非过程化语言，所以一条语句可以代替一系列过程。
3
The purpose of this procedure is to provide for a system, instructions and to identify the procedural controls associated with inspection, non destructive examination and test activities.