凹角

concave convex game

凹凸对策

concave angle 凹角 | concave convex game 凹凸对策 | concave curve 凹曲线

conchiolin

珍珠角質

concave 凹面,凹雕物 | conchiolin 珍珠角質 | conchoidal fracture 貝殼狀斷口

gravure

照相凹版印刷

照射角 illumination angle | 照相凹版印刷 gravure | 照相排字 film setting

incubation test

刻痕,凹槽

incribed angle 内接角 | incubation test 刻痕,凹槽 | inculating crystal 籽晶

PROCOELA NICHOLLS

前凹型亚目

(82) 粗皮角蟾Megophrys palpebralespinosa Bourret,1937 | 前凹型亚目PROCOELA NICHOLLS,1916 | 三、蟾蜍科Bufonidae Gray,1825

reentrant code

重入 码

reentrant angle 凹角 | reentrant code 重入 码 | reentrant face wall 凹入曲面壁

handgravure

手工凹印

handgoniometer 接触测角仪 | handgravure 手工凹印 | handgrip 把,紧握

waning slope

下凹坡

万县动物群 Wanhsien fauna | 下凹坡 waning slope | 湾湾角石上科 Wanwanoceras

slotted set with cup point

开槽凹端紧定螺钉

35 DIN436 方垫圈 square washers | 36 DIN438 开槽凹端紧定螺钉 slotted set with cup point | 37 DIN439 六角薄螺母 hexagon thin nuts

hexagonal head wrench

六角头扳手

hexagonal head bolt 六角头螺栓 | hexagonal head wrench 六角头扳手 | hexagonal hollow set screw 六角凹头固定螺钉

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