英语翻译

题目

英语翻译
麻烦大人帮我翻译以下的文件啊：
These Conditions numbered 21 to 28 inclusive ("PEC 2") shall be added to Conditions numbered 1 to 20 inclusive of those entitled "Conditions of Purchase for Engineering Plant and Materials PEC 1 (2000) ("PEC 1") when so specified in any Purchase Order.When so added
21.1 any reference to "Conditions" (except in this Clause 21) whether in PEC 1 or PEC 2 shall include reference to PEC 1 and PEC 2.
21.2 defined terms in PEC 1 have the same meaning in PEC 2.
21.3 any reference in PEC 2 to clauses numbered 1 to 20 inclusive refers to such clause numbers in PEC 1.

答案

这些条件有包含21日至28日（ “PEC2 ” ）应加入条件编号1至20个,其中包括那些题为“购买条件的工程设施和材料导体1 （ 2000 ） （ ”PEC1 “ ）时所指明的任何采购订单.如此说
  1月21日提及任何“条件” （除在这第21条）是否在佩奇1或导体2应包括提及PEC1和PEC2 .
   21.2定义的术语在Pec 1具有相同的含义在PEC2 .