數(shù)據(jù)庫(kù)錯(cuò)誤: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'limit 1' at line 1]
select title from `demo_menu` where id= limit 1
數(shù)據(jù)庫(kù)錯(cuò)誤: [Table 'my8907748842.demo_' doesn't exist]
SELECT title,keywords,description FROM `demo_` where id=1162
蠕動(dòng)泵作為一種特殊的泵類,相較于傳統(tǒng)泵具有獨(dú)特的優(yōu)點(diǎn)。而在蠕動(dòng)泵中廣泛使用的同步電機(jī)更為穩(wěn)定。本文將詳細(xì)介紹蠕動(dòng)泵的優(yōu)點(diǎn)及同步電機(jī)的應(yīng)用。