Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前量算积方法有方格纸法、平行法、求积仪法。

Parallel lines are lines that never join.

平行是永不相交。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行是在同一平上永不相交。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行置于锯齿形条纹背景上，左氏错觉会让平行看起来不平行。

There are two parallel lines.

这有两条平行。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

用的量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线是永不相交的线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置于锯齿形条纹背景，左氏错觉会让平行线看起来不平行。

There are two parallel lines.

这有两条平行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的积方法有方格纸法、线法、求积仪法。

Parallel lines are lines that never join.

线是永不相交的线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 线是在同一上永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将线置于锯齿形纹背景上，左氏错觉会让线看起来不。

There are two parallel lines.

这有两线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

常用的量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线是永不相交的线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置于锯齿形条纹背景，左氏错觉会让平行线看起来不平行。

There are two parallel lines.

这有两条平行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积法有格纸法、平线法、求积仪法。

Parallel lines are lines that never join.

平线是永不相交的线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平线是在同一平上永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平线置于锯齿形条纹背景上，左氏错觉会让平线看起来不平。

There are two parallel lines.

有两条平线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格纸法、行线法、求积仪法。

Parallel lines are lines that never join.

行线是相交的线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 行线是在相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将行线置于锯齿形条纹背景，左氏错觉会让行线看起来行。

There are two parallel lines.

这有两条行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用量算积方法有方格纸法、平行法、求积仪法。

Parallel lines are lines that never join.

平行永不。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行同一平上永不。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行置于锯齿形条纹背景上，左氏错觉会让平行看起来不平行。

There are two parallel lines.

这有两条平行。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用量算积方法有方格纸法、平行法、求积仪法。

Parallel lines are lines that never join.

平行是永不相交。

Parallel lines are, by definition, lines on the same plane that never join.

照定义说, 平行是在同一平上永不相交。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行置形条纹背景上，左氏错觉会让平行看起来不平行。

There are two parallel lines.

这有两条平行。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线是永不线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平上永不线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置于锯纹背景上，左氏错觉会让平行线看起来不平行。

There are two parallel lines.

这有两平行线。