subtend
v.对向,包在叶腋内
难易程度:
subtend为短语/超纲词汇
词形变化:
动词过去式:subtended 过去分词:subtended 现在分词:subtending 第三人称单数:subtends
subtend
/səb'tend; səb`tɛnd/
v [Tn] (geometry 几) (of a chord2(1) or the side of a triangle) be opposite to (an arc(1) or angle) (指弦或三角形之边)对向(某弧或角)
*The chord AC subtends the arc ABC. The side XZ subtends the angle XYZ. AC 弦对向 ABC 弧. XZ 边对向 XYZ 角. =>illus 见插图.