福利损失三角形的英文：
Welfare loss triangle

welfare是什么意思：
n. 幸福，安宁，繁荣；福利；福利事业

It will be paid out of the welfare fund.
这将从福利费中支付。

These are matters that bear on the welfare of the community.
这些都是涉及社会福利的问题。

The order will be for the welfare of the infant.
该命令将保障未成年人的福利。

loss是什么意思：
n. 损耗，亏损；丢失；去世；失败；浪费；降低；减少

Depreciation, loss of market, loss of use and other consequential losses of any description.
贬值、丧失市场或使用价值等其他后果损失。

The school was lamed by losses of staff.
学校因教职人员流失而开不了课。

loss and damage or delay of goods.
贷物的损失、损坏或交付延误。

triangle是什么意思：
n. 三角形，三角形物体；三角铁；三角板；三角关系

It is called Equilateral Triangle that a triangle has equal legs.
三条边都相等的三角形叫做等边三角形。

The design is formed with triangles.
图案是由三角形构成的。

Minimum sight triangle
最小视界三角形