n.亚层(亚壳层；子壳层；支壳层)
Hence a full subshell has zero angular momentum and is spherically symmetric. 于是，一个已经填满的支壳层的角动量为零，并且是球面对称的。
Each command in a pipeline is executed as a separate process (i.e., in a subshell). 管道符号的作用,引用一段话,或许就明白了!
a full subshell has zero angular momentum and is spherically symmetric. 于是，一个已经填满的支壳层的角动量为零，并且是球面对称的。
Keywords group of energy levels;subshell;shielding function;penetrating effct; 能级组;亚层;屏蔽作用;钻穿效应;
10. Hence a full subshell has zero angular momentum and is spherically symmetric. 于是，一个已经填满的支壳层的角动量为零，并且是球面对称的。
