diff --git a/GB∕T 21303-2017 灌溉渠道系统量水规范.pdf b/GB∕T 21303-2017 灌溉渠道系统量水规范.pdf new file mode 100644 index 0000000..b576f57 --- /dev/null +++ b/GB∕T 21303-2017 灌溉渠道系统量水规范.pdf