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- Soap does not lather well in hard water. 肥皂在硬水中起不了多少泡沫。
- Equal cleanness in cold, hot or hard water. 适用于冷热水与硬水：。
- But he still he is swallowing own hard water. 但是他还是自己在吞着自己的苦水。
- Can you spell “hard water” in three letters ? 谜面：你能用三个字母拼出“坚硬的水”吗？
- Hard water and soft water are two different kinds of water. 硬水和软水是两种不同的水。
- Most hard water or lime scale removers are only acidic cleaners. 大多数水碱或水垢清除剂只是酸性清除剂而已。
- One way to counteract hard water is by using a water softener. 中和硬水的方法是使用软水剂。
- Hard water furs the kettle. 硬水使壶生水垢。
- This powder has mighty active-agent, and has whitening effect on white fabrics, sint-able for both soft and hard water, Mainly wsed to wash oueralls, tablecloth and table napkin etc. 这是一种具有强力活性剂的洗衣粉，包含综合表面活性剂以及增光泽剂，湿润剂，水质软化剂。适于软硬水。对白色织物有增光的作用。可用于工装、台布、餐巾的洗涤。
- Must carry on the drainage test many times repeatedly to chamberpot's sewer inspection, has a look at the draining water effect. 对马桶的下水检查则需反复多次地进行排水试验，看看排水效果。
- Na+, Mg2+ and Ca2+ can increase the apparent solubility of CB in the surfactant. Thus, it can be seen that the mixed surfactant can prove to be able to greatly enhance the resistance to hard water and heighten the solubilization effect. Na+、Mg2+和Ca2+能增大氯苯在表面活性剂中的表观溶解度,阴非离子表面活性剂SDS与TW80混合后能提高表面活性剂的抗硬水能力,提高增溶效率。
- Secondly, it has the features of low foam, hard water resisting and readily rinsing, The cleaning strength redoubles. 第二，该种洗衣服使用时泡沫低，耐硬水，有容易漂洗的特点，洗净力倍增。
- There is good evidence that pure water effects nothing in wearing away rock. 有确实的证据可以证明，清水在侵蚀岩壁上是不发生影响的。
- Secondly,it has the features of low foam,hard water resisting and readily rinsing,The cleaning strength redoubles. 第二，该种洗衣服使用时泡沫低，耐硬水，有容易漂洗的特点，洗净力倍增。
- May know by the experimental result, the draining water effect increases along with the nonwoven layer decreases, but if use monolayer nonwoven, strength and durability are not enough. 由实验结果可知，排水的效果随著层数增加而减低，但若使用单层的话，强力及耐久性都不够。
- Hard water has a high mineral content. Most of the dissolved minerals are either calcium or magnesium. 水之矿物质含量较高,其溶解性金属以钙及镁为主。
- Nansen is called as this “the stagnant water effect”, reports on said that Ram under this kind of phenomenon's function, the navigation speed slowed down compared to the normal speed 1/4. 南森将这称作“死水效应”，报告上称，弗拉姆在这种现象的作用下，航行速度比正常速度放慢了四分之一。
- Effective sequestering of metal ions, resulting in better water retention even though used in hard water processing. 对于金属离子有着良好的掩蔽作用,即使用硬水加工生产,也能产生较好的保水效果。
- If the shallow water effect exists in the trial of high speed ship,a modification should be made for the measured results of ship speed and shaft power to predict the rapidity of ship accurately. 若高速船试航时，存在浅水影响，则应对航速和轴功率测量结果进行修正，以便准确预报实船的快速性；
- Hard water which can be softened by adding sodium carbonate is called permanent hard water. 经过加入碳酸钠能被软化的硬水，称为永硬水。
