subtend单词基本解析：

v.对向，包在叶腋内
vt. [数]对着, 对向, [植]包在叶腋内
v.对向，包在叶腋内；

subtend变化用词：

第三人称单数:subtends;过去式:subtended;过去分词:subtended;现在分词:subtending;
动词过去式: subtended | 动词过去分词: subtended | 动词现在分词: subtending | 动词第三人称单数: subtends |
过去式：subtended过去分词：subtended现在分词：subtending第三人称单数：subtends

subtend英英释义：

Verb

1. be opposite to; of angles and sides, in geometry

动词 subtend:

be opposite to; of angles and sides, in geometry

同义词：delimit

subtend[ səb'tend ]v.be opposite to; of angles and sides, in geometry

同义词：delimit

subtend中文词源：

subtend 对向弧，对向角 sub-,在下，向上，-tend,延展，词源同 tend,extend.用于几何学术语指对向弧，对向角。

subtend用法和例句：

In the daisy family the numerous bracts which subtend the inflorescence are known as an involucre.

在菊科植物中,苞片数目多而聚生在花序外围,称为总苞.

互联网

subtend

Usually, two pairs of the fertile bracts in the middle of the cone subtend six ovules, which initiate in an acropetal manner.

在北京 ,雌球果原基 7月分化。 通常一个球果有 4对苞片 ,中部两对可育 ,靠球果顶端一对各产生一枚胚珠 ,其下一对各两枚。

In the daisy family the numerous bracts which subtend the inflorescence are known as an involucre.

在菊科植物中，苞片数目多而聚生在花序外围，称为总苞。

Planck will be able to measure CMB temperature differences as small as five millionths of a kelvin and detect hot and cold spots that subtend less than a tenth of a degree across the sky.

普朗克号将可测量到五百万分之一K的CMB温度差异，并侦测到天空上张角小于1/10度的冷热区域。

Accuracy Analysis of Subtend Trigonometric Leveling and Determination of Weight Matrix for Adjustment of Elevation Mixed Network

精密测距三角高程精度分析及高程混合网定权

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