垂直交易限制 vertical restraints of trade
在水平和垂直线上限制 Alt
垂直性的限制竞争行为 Vertical restraints
限制垂直发散准直器 Vertical divergence control collimator
最佳垂直限制：浮动框必须被置于此包含块内尽量高的地方。
Optimum vertical constraint. A float box must be placed as high as possible within its containing block.
位置优先原则：在判断浮动框位置时，最佳垂直限制优于最佳水平限制。
Position precedence rule. When resolving the float box position, the optimum vertical constraint takes precedence over the optimum horizontal constraint.
包含块的垂直限制：左浮动框的上margin edge不能高于包含块的上padding edge。
Containing block vertical constraint. A left float box's top margin edge may not be higher than the containing block's top padding edge.
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