There are three types of security label components: array, set, and tree.

有三种类型的安全标签组件：数组、集合和树。

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When a PV array is shaded by another object, like a tree or a house, the solar panels get backed up with electrons like cars in a traffic jam, and the current drops.

当一个光伏阵列被树木或房屋等物体遮挡住时，太阳能电池中会发生电子堆积现象，好似在交通阻塞中的汽车一样，因而电流减弱。

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At the end of a successful XML tree walk, this function will convert and store all the XML elements (the root element and all the child elements) in a PHP associative array.

成功遍历xml树之后，该函数就用PHP关联数组转换和存储了所有的XML元素(根元素和所有的孩子元素)。

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With help from his father and after many mistakes Aidan ended up with two models: a traditional flat-panel array and a tree-shaped solar collector designed to mimic the branch sequence of an oak tree.

WSJ: A Youngster's Bright Idea Is Something New Under the Sun; Scientist Is 13-Year-Old Aidan Dwyer