Directional control valve
[化] 定向控制閥
?? 詞語(yǔ)組成解析
directional
[[di'rek??n?l]]
a. 方向的
control
[k?n'trol]
vt. 控制;管理;限制;支配;
n. 支配權(quán);操縱者;（對(duì)國(guó)家、地區(qū)、機(jī)構(gòu)等的）管理權(quán);（鍵盤上的）控制鍵;
valve
[v?lv]
n. 閥;真空管;（管樂器的）活栓;（心臟的）瓣膜;
vt. 裝閥于;以活門調(diào)節(jié);
??? 情景例句
But somehow I got my days mixed up and didn't realize the mistake until now.
可是不知道怎么回事，我把日期弄錯(cuò)了，而且到現(xiàn)在才知道這個(gè)錯(cuò)誤。
After graduation, Mr. Jones immediately became a member of the United Nations Relief and Rehabilitation Administration.
畢業(yè)后瓊斯先生就加入了聯(lián)合國(guó)救濟(jì)善后總署。
How long have you lived here?
您在這里住了多長(zhǎng)時(shí)間？