圆规

drop line

下伸线(小楷字母)

"落锻","drop forging" | "下伸线(小楷字母)","drop line" | "点圆规","drop pen"

drop pass

(曲棍球)留球,停运传球

drop panel (柱顶)托板. | drop pass (曲棍球)留球,停运传球. | drop pen 点圆规.

ellipse of deformation

变形椭圆

ellipse 椭圆 | ellipse of deformation 变形椭圆 | ellipsograph 椭圆规

ellipsograph

椭圆规

ellipse gear flow meter 椭圆齿轮流量计 | ellipsograph 椭圆规 | ellipsoid resonator 椭圆形谐振器

ellipsograph

椭圆模板

"椭圆形字母","ellipse template" | "椭圆模板","ellipsograph" | "椭圆规","ellipsoid"

boussinesq equation of motion

布辛涅斯克运动方程

boussinesq approximation 布辛涅斯克近似 | boussinesq equation of motion 布辛涅斯克运动方程 | bow compasses 弹簧圆规

Freemasonry

共济会

共济会的标志,圆规、直尺以及代表法典的G组成"共济会"(Freemasonry)可以说是这个这个世界上最为庞大的神秘组织,它成立于公元16世纪和17世纪之间,英文全称为"Free and Accepted我们再来仔细看一下左边的图案,

leg of a right triangle

直角边

"左侧视图","left-hand view" | "直角边","leg of a right triangle" | "圆规的","leg of compass"

pen nib

笔尖清洁剂

笔尖清洁剂 pen handle | 笔尖清洁剂 pen nib | 鸭嘴笔尖(圆规) pen point

pen nib

笔尖

"圆规用鸭嘴笔尖","pen leg of compass" | "笔尖","pen nib" | "鸭嘴笔尖","pen point"

Greco-Latin square：希腊拉丁方格

Granduation of curve 曲线递合 | Greco-Latin square 希腊拉丁方格 | Grand lot 大批

cunningham：帆前角下拉索

斜拉器:kicking strap | 帆前角下拉索:cunningham | 调整索:outhaul