查询词典 pole vault

single-pole double-throw switch：单刀双投开关; 单刀双掷开关

single-pole distribution switch 单极分路开关 | single-pole double throw switch 单刀双投开关; 单刀双掷开关 | single-pole enclosed fused switch 单极保护式负荷开关

double pole single-throw switch：双极单投开关

double-pole double-throw switch 双极双投开关 | double-pole single-throw switch 双极单投开关 | double-pole switch 双极开关

three pole single-throw switch：三刀单投开关

three pole knife switch 三极闸刀开关 | three pole single-throw switch 三刀单投开关 | three pole switch 三刀开关

three pole single-throw switch：三刀单掷开关

three-pole knife switch 三极闸刀开关 | three-pole single-throw switch 三刀单掷开关 | three-pole switch 三刀开关

pole of the equator：赤极

黄极 pole of the ecliptic | 赤极 pole of the equator | 北极星 pole star

北极;the South Pole,南极：the North Pole

Notes on the text 课文注释 | 1 the North Pole,北极;the South Pole,南极. | 2 a great many photographs,大量照片.

pole plasm：极原生质

极核 pole nucleus;polar nucleus | 极原生质 pole plasm | 极板 pole plate

commutating pole：换向极

commutating pole winding 换向极绕组 | commutating pole 换向极 | commutating pole 换向极、间极

pole scaffolds：木杆脚手架

pole road ==> 木杆道 | pole scaffolds ==> 木杆脚手架 | pole sensitivity ==> 極感度

commutating pole motor：换向极电动机

commutating pole generator 换向极发电机 | commutating pole motor 换向极电动机 | commutating pole winding 换向极绕组

Cardinals：基數 Ordinals 序數

Have a nice trip. 旅途愉快 | Numbers (數字) 基數與序數 | Cardinals 基數 Ordinals 序數

plasters：石膏

plaster of paris 熟石膏,烧石膏,半水石膏 | plasters 石膏 | plastic Solution 粘性溶液