n.(床架等四周的)短帷幔，布帘

原形：valance复数：valances

The valence electrons in an atom are those that participate in chemical bonding.
原子中的价电子是参与化学键合的电子。
The molecule of water has two valence electrons shared between the oxygen and hydrogen atoms.
水分子中有两个价电子在氧和氢原子之间共享。
In order to achieve a stable electron configuration, atoms tend to gain or lose valence electrons.
为了达到稳定的电子配置，原子倾向于获取或失去价电子。
The valence of an element is determined by the number of electrons it can gain, lose, or share in a chemical bond.
元素的价数是由它在化学键中可以获取、失去或共享的电子数量决定的。
Sodium has one valence electron, which it readily loses, forming a +1 ion.
钠有一个价电子，它很容易失去，形成+1离子。
The octet rule states that atoms tend to have eight valence electrons for stability.
八电子规则指出，原子倾向于拥有八个价电子以保持稳定。
The carbon atom has four valence electrons, which allows it to form four covalent bonds.
碳原子有四个价电子，这允许它形成四个共价键。
The valence shell of an atom is the outermost shell where electrons are found.
原子的价壳层是最外层，电子位于其中。
In the periodic table, elements are arranged based on their atomic number and valence.
在周期表中，元素根据其原子序数和价数进行排列。
When two atoms bond, they share their valence electrons to form a stable compound.
当两个原子结合时，它们共享价电子形成稳定的化合物。