dioptra

英式音标：[daɪ'ɒptrə]

美式音标：[daɪ'ɒptrə]

词义：

n.

测量高度及角度用的一种光学装置；

英英释义

Dioptra

A dioptra () is a classical astronomical and surveying instrument, dating from the 3rd century BCE. The dioptra was a sighting tube or, alternatively, a rod with a sight at both ends, attached to a stand.

以上来源于:Wikipedia

用法：

权威例句

INSTRUMENTACION PARA LA TOPOGRAFIA Y SU

“动姐”必须“动人”

Dioptra

Dioptra

Heron's Dioptra 35 and Analemma Methods: An Astronomical Determination of the Distance between Two Cities

Heron's Dioptra

When did Michael Psellus die? The evidence of the Dioptra : Byzantinische Zeitschrift

Uno strumento astronomico descritto nel corpus Archimedeo: la dioptra di Archimede.

A Detail of Heron's Dioptra

The scribes ancient copies of Dioptra by Philip Solitarius from Kirillo-Belozersky Monastery

造句：

1. The recent rebound in mortgage rates could snuff out the housing recovery.

抵押贷款利率最近的回升可能会扼杀房地产的复苏。

来自柯林斯例句

2. Bad deeds , as well as good, may rebound upon the doer.

善有善报, 恶有恶报.

来自《简明英汉词典》

3. He took heroin for the first time when he was on the rebound from a broken relationship.

他第一次吸食海洛因是在一次失恋之后的失意期。

来自柯林斯例句

4. She quarrelled with Paul and then married Peter on the rebound.

她和保罗争吵后愤而嫁给了彼得.

来自辞典例句

5. His courageous words took his depressed supporters on the rebound.

他趁机用豪言壮语鼓舞了那些消沉的支持者.

来自辞典例句

[ rebound 造句 ]