어과수
2021-11-30 16:47
느릿느릿 돌아가는 풍력 발전기.
풍력 발전기의 날개는 왜 항상 3개일까요?
날개가 2개이거나 4개인 풍력 발전기는 왜 없을까요?
궁금증을 해소하고 싶다면
12월 15일 자 '질문하면 답해줌' 기사를 확인하세요~!
Severity: Notice
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Filename: templates/commentlist.php
Line Number: 8
Backtrace:
File: /var/www/html_dev/mkids_dongascience_com/application/views/templates/commentlist.php Line: 8 Function: _error_handler
File: /var/www/html_dev/mkids_dongascience_com/application/views/kids_tv/viewContents.php Line: 82 Function: view
File: /var/www/html_dev/mkids_dongascience_com/application/controllers/Kids_tv.php Line: 128 Function: view
File: /var/www/html_dev/mkids_dongascience_com/www/index.php Line: 301 Function: require_once
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: total
Filename: templates/commentlist.php
Line Number: 8
Backtrace:
File: /var/www/html_dev/mkids_dongascience_com/application/views/templates/commentlist.php
Line: 8
Function: _error_handler
File: /var/www/html_dev/mkids_dongascience_com/application/views/kids_tv/viewContents.php
Line: 82
Function: view
File: /var/www/html_dev/mkids_dongascience_com/application/controllers/Kids_tv.php
Line: 128
Function: view
File: /var/www/html_dev/mkids_dongascience_com/www/index.php
Line: 301
Function: require_once