"A sweet temper" is a figurative expression, but "sweet coffee" is not. "甜蜜的性情"是個(gè)比喻的說(shuō)法，而"甜咖啡"則不是。
The sealing disk may be removed, if necessary, by removing the screws connecting the keeper plate to the clapper. 如果有必要的話(huà)，可以通過(guò)拆卸將閥瓣連接到承座壓板的螺絲來(lái)拆卸密封閥瓣。
滬公網(wǎng)安備 31011502000490號
電信業(yè)務(wù)許可證編號：滬B2-20190700
