|
In CSA standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.% a4 `( H. `7 U/ g+ o
1 e, E- r3 F) r) D3 ?以上文字摘录自:CSA C22.2 No.250.13-12,如图:
3 r" X6 m* z5 _' ?. |
% d* a* O3 S. }( J) R
, k, J% [( ~) r/ ?" `+ U欢迎探讨标准细微之处!
$ W; H6 e: {3 c6 `% _ |
本帖子中包含更多资源
您需要 登录 才可以下载或查看,没有帐号?注册安规
x
评分
-
查看全部评分
|