perched permanent ground water 常静滞地下水 permanent hard water 永久硬水 permanent memory permanent storage 永久性存储器 dry hardness 干态硬度 相似单词 hardness n.[U] 坚硬,困难,严厉,勇气 Permanent a. 永久的,不变的,固定的,持久的 n. 电烫的头发 a. 永久的 permanent adj. 1. 永久的,...
permanent-hardness-of-water网络水的永久硬度网络释义 1. 水的永久硬度 为永久硬度,permanent... ... ) permanent hardness of water 永久硬度 ) permanent hardness of water 水的永久硬度 ... www.dictall.com|基于1 个网页© 2024 Microsoft 隐私声明和 Cookie 法律声明 广告 帮助 反馈...
Optimum operation conditions were determined as initial pH 7.1, resin dose 8 g dry resin•L-1, temperature 25 oC, contact time of 360 min, and in those conditions the retention capacity for the Ca2+ ions is 17.18 mg•g-1 that corresponds to a removal efficiency equal to 85.7%.Bogdan...
Permanent hardness in water can damage piping, boilers as well as other pressurized systems. Hard water tends to form scale deposits that can cause clogging inside the pipe surfaces and other machinery. This type of precipitation is insoluble. ...
The meaning of PERMANENT HARDNESS is the part of the total hardness of water that persists after boiling —distinguished from temporary hardness.
Define permanent hardness. permanent hardness synonyms, permanent hardness pronunciation, permanent hardness translation, English dictionary definition of permanent hardness. n chem hardness of water that cannot be removed by boiling as it results mainly
Step-by-Step Solution:1. Understanding Water Hardness: Water hardness is classified into two types: temporary hardness and permanent hardness. 2. Identifying Permanent Hardness: Permanen
As a result of structural modification, they claimed that the alloy’s tensile strength, yield strength, percentage elongation, and bulk hardness values increased. Hekimoğlu and colleagues revealed that the hardness and mechanical properties of Al-12Si alloy can be improved with strontium and ...
10.Pen material:Using the aluminium alloy, high hardness, good toughness, longer service life.11. Suitable for permanent makeup and facial treatment Product Parameters Name Mastor Permanent Makeup Machine & Microneedle Therapy Pen Color Silver Input AC100~...
4) permanent hardness of water 永久硬度5) permanent hardness 为永久硬度6) permanent hardness 永久硬度<冶>补充资料:为永久硬度 分子式:CAS号:性质:又称为永久硬度。由硫酸钙、氯化钙等微溶于水,加热水时不产生沉淀的无机化合物构成的水硬度。 说明:补充资料仅用于学习参考,请勿用于其它任何用途。