当压力改变时,阀帽容易上下移动.Bonnet tendency to move up or down as pressure changes.阀帽: 不需要将阀门从管路中拆除,就可以进入维护铰链和阀瓣.Cap: permits access to hinge and disc without removing valve from line.止回阀标签通常安置在阀帽的边缘上.Check valve tags are typically ...
Function: Use PWM 6 output PWM signal, by filtering electrical realize DAC conversion.功能: 使用PWM6输出PWM信号, 通过滤波电实现DAC转换.The third column of Table 1 gives the normalized DAC output after an optional current - to - voltage c...
It was a slightly scaled - down version of the Beatlemania of past days.这只稍逊于当年的披头士狂热.It is a slightly scaled - down version of the beatlemania of past days.这只稍逊于当年的披头四狂热.Beatlemania came to North America in early 1964, ...
In micrographics a device for holding a frame, or frames, of microfilm.在缩微图形技术中,用于固定一帧或多帧缩微胶片的装置.In micrographics, a device that enlarges microimages for viewing.在缩微照相技术中, 放大图形以便观察的一种设备....
There would be jetties outside the main wall for ships bringing supplies.主墙外边将有供停靠运送供应品的船只用的码头.Docks are generally made up of wharves aprons of docks jetties piers quays terminals , warehouses and offices.码头主要由码头前沿...
Now and then they heard the roar of a heavy truck.他们不时地听到大卡车的轰鸣声。A variety of heavy industries grew up alongside the port.各种重工业沿着港口逐渐发展起来。...a sharp short-lived storm with heavy hail.一阵短暂的大雹暴We can not make heavy concess...