quantity n. 1.量 (opp. quality); 分量,數(shù)量;額;【物理學】值,參量。 2.〔pl.〕大量,大宗,大批,許多。 3.定量,定額。 4.【數(shù)學】量;表示量的數(shù)字[符號];【邏輯學】(名詞、特別是命題主語的)量。 5.【音韻學】音節(jié)的長短;表示音節(jié)長短的符號;【語音】(元[母]、音節(jié)等的)音量。 6.【法律】期限。 a known quantity 已知數(shù)。 an unknown quantity 未知數(shù);〔比喻〕難預測的人[物]。 a negligible quantity 可忽略的量;〔比喻〕無足輕重的人〔物〕;可忽略的因素。 a quantity of 一些。 in quantities 大量。 in quantity 很多。
Intelligent counter digital frequency rotating speed line velocity display control transmit instruments are all adopt used advanced microprocessor for smart control . input is pulsed quantity or contect switch quantity signal, after cpu operation processing, count, rotating speed or line velocity will be clearly intuitional indicated by high brightness led numeral tube, at the same time, these signals can be changed into standard voltage current signal to transmit output . and have the functions of super-limited alarm, standard serial communication function 簡易后備操作器接收從dcs系統(tǒng)或pid調(diào)節(jié)器給定的模擬量信號,正??刂茣r,操作器輸入輸出相當于直通的,以實現(xiàn)dcs系統(tǒng)或pid調(diào)節(jié)器對執(zhí)行機構(gòu)的自動控制,當前級dcs系統(tǒng)或pid調(diào)節(jié)器發(fā)生故障時,操作器接收到故障狀態(tài)信號,即轉(zhuǎn)為手動控制狀態(tài),由按鍵控制操作信號的輸出,當故障解除,儀表自動恢復自動狀態(tài)。
Are all adopt used advanced microprocessor for smart control . input is pulsed quantity or contect switch quantity signal, after cpu operation processing, count, rotating speed or line velocity will be clearly intuitional indicated by high brightness led numeral tube, at the same time, these signals can be changed into standard voltage current signal to transmit output . and have the functions of super-limited alarm, standard serial communication function 接收從dcs系統(tǒng)或pid調(diào)節(jié)器給定的模擬量信號,正常控制時,操作器輸入輸出相當于直通的,以實現(xiàn)dcs系統(tǒng)或pid調(diào)節(jié)器對執(zhí)行機構(gòu)的自動控制,當前級dcs系統(tǒng)或pid調(diào)節(jié)器發(fā)生故障時,操作器接收到故障狀態(tài)信號,即轉(zhuǎn)為手動控制狀態(tài),由按鍵控制操作信號的輸出,當故障解除,儀表自動恢復自動狀態(tài)。