撥鍵器 的英文怎麼說
中文拼音 [bōjiànqì]
撥鍵器
英文
key pulley-
The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries - - the spinet, the dulcimer, and the virginal
鋼琴的家系可以追溯至15至16世紀早期的鍵盤樂器,包括小型撥弦琴、洋琴和維金娜琴。Set the shutter by pressing and holding the exposure - compensation button, which also bears a small time value ( tv ) label, and turn the up / down dial until the desired speed, in numeric half steps, appears in the viewfinder or lcd
按住曝光補償鍵+ / - ,它也肩負著tv功能,調節主控撥盤直到需要的速度,速度以1 / 2級調節並在取景器或lcd屏中出現。Strowger system introduced in australia and new zealand. development of key - type impulse sender, and simplex dialing on toll lines
澳大利亞和紐西蘭引進史端喬系統。開發鍵式脈沖發送器和長途電話線單工撥號。The keypad is a vestige of the rotary dial, which itself is an artefact of the switch from human operators to direct - dialling in the 1920s
數字鍵盤演變自轉盤撥號器,而轉盤撥號器則是1920年代人工接線員向直接撥號轉變的產物。In this paper, firstly, the key techniques concerned with the monitoring system of pollution sources are analyzed. secondly, the function of the monitor is positioned, and it ' s designed that a modularized hardware system, including the main control module, display and keypad module, dial control module and lonworks control module, which adapts the cooperation of microprocessors
本論文首先分析了污染源監測系統關鍵技術,從而定位儀表的功能,設計了模塊化的硬體結構,包括主控模塊、顯示鍵盤模塊、撥號控制模塊和lonworks控制模塊,採用了多微處理器協同工作。分享友人