塔吊的安全在施工中至关重要，随着内爬式塔吊在高层结构施工中被广泛采用，设计安全、可靠并可以周转使用的附墙架是保障施工安全的重要前提。
The safety of tower crane is very important during construction, and the internal climbing tower crane has been widely adopted to high-rise structure construction.
该密封音箱采用21 V2超低音单元，内附安装配件，紧密结构重现强劲低音。
Sealed box equipped with 21 V2 subwoofer. Installation kit included. Dependable bass reproduction in a compact environment.
CSS的结构形式是由两个“列”-一左程序化的“传奇”一栏，加上右班列内附实际窗体域。
Structurally the CSS form is made up of two "columns" - a left stylized "legend" column, plus a right DIV column enclosing the actual form field.
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