spiral

复数：spirals过去式：spiralled过去分词：spiralled现在分词：spiralling第三人称单数：spirals

1. 螺旋的 advancing or ascending in a continuous curve that winds round a central point

1. [C] 螺旋(线) spiral line
2. [C] 螺旋式的上升(或下降) continuous increase or decrease in two or more quantities alternately because each depends on the other(s)

1. vi. 盘旋上升(或下降) move in a spiral course
2. vi. (物价等)不断急剧地上升(或下降) increase or decrease continuously

spiral bevel gear弧齿锥齿轮；螺旋伞齿轮

spiral groove螺旋沟

spiral case蜗壳；水轮机蜗壳

downward spiral向下旋转；螺旋式下跌；减记恶性循环

spiral flow螺旋流

spiral pipe螺旋管

spiral wound[医]螺旋状伤

spiral angle捻角；螺线角；蜗线角

spiral chute蜗旋滑槽；螺旋斜槽

spiral spring螺旋弹簧

spiral galaxy n. 螺旋星云（等于spiral nebula）

spiral staircase n. 螺旋梯

spiral classifier螺旋分级机

spiral wound gasket金属缠绕垫；缠绕式垫片

spiral line螺旋线

logarithmic spiral[数]对数螺线

spiral type n. 螺旋式

spiral casing蜗壳

spiral weld螺旋形焊缝

spiral curve螺旋曲线

1. Society invariably moves forward in a spiral.
   社会的运动总是采取螺旋形前进的。
2. This caused a downward spiral into depression.
   这使经济下滑恶化为经济萧条。

1. The smoke spiraled upwards.
   那股烟袅袅上升。
2. Prices are still spiralling.
   价格仍然在急剧上涨。
3. Their profits began to spiral down disastrously.
   他们的利润开始螺旋形地急剧下降。

1. A snails shell is spiral in form.
   蜗牛的外壳形状是螺旋形的。
2. Her hair was styled into a cascade of spiral curls.
   她的头发被做成了瀑布般的螺旋形鬈发。
3. The steam travels in spiral paths.
   蒸汽是盘旋上升的。
4. The light house has spiral stairs leading to the top.
   塔有个盘旋上升通向塔顶的梯子。