如果某个行的大小大于页大小(即大于2KB)，那么包含该行的页面可能被置换出内存。
If a row is larger than a page (that is larger than 2 KB), then the page containing that row might be kicked out of memory.
所得少量浓缩液去掉铁等杂质之后，加过量氨使钴形成络合物，再用锌粉置换出金属钴粉。
Cobalt can be converted into complex ion by excess ammonia and then recovered as highly pure metal cobalt powder by replacing with zinc powder.
净化过程主要是加入锌粉到溶液，这样所有电位序在锌之后的元素都被置换出来并且凝固沉淀下来。
Purification is mainly done by adding zinc dust to the solution. As all the elements to be removed lie below zinc in the electrochemical series they can be precipitated by cementation.
元素的特征价数是以该元素一个原子可结合的氢原子数或可从一化合物中置换出的氢原子数来表示。
Hydrogen (h) always has valence 1, so other elements' valences equal the number of hydrogen atoms they combine with.
一种痕迹重金属含量测定的试剂，在利用阳极溶出伏安法进行测定之前，置换出样品中所含的重金属离子。
It is a reagent for measuring the marked heavy metal component, which substitute the containing heavy metal ion in the sample before using the method of anodic stripping voltammetry for measuring.
离子交换软化法是用某种离子交换剂中不形成水垢的离子，将水中容易生成水垢的钙、镁离子置换出来，从而使水得到软化。
Ion exchange softening method is to use a certain scale forming ions in the ion exchanger, will be easy to generate the scale of calcium and magnesium ion in water, making water softening.
离子交换软化法是用某种离子交换剂中不形成水垢的离子，将水中容易生成水垢的钙、镁离子置换出来，从而使水得到软化。
Ion exchange softening method is to use a certain scale forming ions in the ion exchanger, will be easy to generate the scale of calcium and magnesium ion in water, making water softening.
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