as light as a butterfly
as light as a butterfly 双语例句
Multi-layer soft cascade ring at a fixed valve plate, the butterfly valve butterfly valve as compared with traditional high temperature, operation light, no friction hoist, turn off when the torque transmission mechanism with the increase to compensate for sealing, improve a butterfly valve sealing performance and durability advantages.
多层软叠式密封圈流动在阀板上，那种蝶阀与传统蝶阀比拟存在耐低温，操作沉即，开关有磨揩，封闭时跟着传念头构的力矩增大往弥补密封，进步了蝶阀的密封性能及延伸应用寿命的长处。
Multi-layer soft cascade ring at a fixed valve plate, 减压阀, the butterfly valve butterfly valve as compared with traditional high temperature, operation light, no friction hoist, turn off when the torque transmission mechanism with the increase to compensate for sealing, improve a butterfly valve sealing performance and durability advantages.
多层软叠式密封圈流动在阀板下，那类蝶阀与传统蝶阀比拟存在耐低温，操做沉即，开关有磨揩，封闭时跟着传念头构的力矩删小往弥补密封，进步了蝶阀的密封性能及延伸应用寿命的长处。
Inception of the series gate quickly in the national gas industry to promote the use, get a better evaluation, it is still pressure around the gas pipeline companies to use; 3, RQZ gas system with a parallel series of iron Gate Valve As China's natural gas into the town, the author and the Shanghai Gas Company, Gas Equipment Suzhou Valve Manufacturing Co., Ltd. According to the characteristics of natural gas, has developed a system of gas cast iron RQZ Parallel Gate Valve with the valve, while retaining the RZ Series valve features, the use of the material enhances wear resistance of the valve, while pressure levels up to the high-pressure B; 4, Butterfly Light compared to the several valves butterfly valves, large diameter, low price, 80 in the early part of the Gas Company has - degree with butterfly, after about ten years use, generally considered ineffective.
该系列闸阀问世以来，迅速在全国煤气行业推广使用，得到了较好的评价，至今仍在各地煤气公司中压管线上使用； 3、RQZ系列球墨铸铁制燃气用平行双闸板闸阀随着我国天然气进入城镇，笔者与上海煤气总公司、苏州市燃气设备阀门制造有限公司根据天然气的特点又研制了RQZ球墨铸铁制燃气用平行双闸板闸阀，该闸阀除保留了RZ系列闸阀的特点外，选用的材质增强了阀门的耐磨性，同时将压力等级提高到了高压B级； 4、蝶阀蝶阀相比上述几种阀门轻便，口径大，价格较低，八十年代初期部分煤气公司曾-度采用蝶阀，经过十年左右的使用，普遍认为效果不好。
as light as a butterfly
相关单词辨析
这组词都有“火焰、烈火、光”的意思，其区别是：
flash: 指突然发出而随即消失的闪光。
glare: 指眩目的光。
blaze: 指猛烈燃烧所发生强烈的光。
glow: 指像冶炼铁和钢时发出的红光。
flare: 指摇曳的火焰。
light: 普通用词，指日、月、星或灯等的光。
twinkle: 指如星光等的闪烁。
glitter: 指连续发出闪烁不定的光。
flame: 指一条或多条火舌，多用复数形式，指由许多火舌构成的大火。
这组词都有“点燃、着火”的意思，其区别是：
ignite: 多用于科技文体，指使某物受热直到燃烧或发光，也可指用火花使易燃物迅速燃烧起来。
light: 普通用词，指点燃易燃物，使其能发光，满足各种需要。
fire: 普通用词，指将某物点燃使其燃烧起来，火势可大可小。
kindle: 指艰难或缓慢地把可燃料点燃，可用于比喻。
这组词都有“灯”的意思，其区别是：
lamp: 通常指以油、气或电为能源的照明设备，一般有罩。
light: 普通用词，含义广泛。泛指一切供照明的灯，多指电灯。