periapsis
名词；
英 [perɪ'æpsɪs] 美 [ˌperɪ'æpsɪs]
基本释义
n.[天]近拱点
词根词缀
前缀
peri
靠近，周围
+
词根
apsis
拱点，轨道
peri + apsis = periapsis
网络释义
轨道力学术语，表示轨道上物体与中心物体之间的最近距离；
Wiktionary英语原文词典
该词在Wiktionary英文原文中有详细的英文释义、词形变化、词源和词汇关系。
查看英文原文词典详情例句
1、The spacecraft reached its periapsis and began its descent towards the planet.
2、The periapsis of the moon's orbit around the Earth is about 363,300 kilometers.
2、The periapsis of the moon's orbit around the Earth is about 363,300 kilometers.
实用场景例句
商务邮件
The satellite will perform a burn at periapsis to adjust its orbital trajectory as planned.
卫星将在近拱点点火，按计划调整其轨道轨迹。
学术写作
At periapsis, the orbital velocity of the object reaches its maximum due to gravitational acceleration.
在近拱点，由于引力加速度，物体的轨道速度达到最大值。
旅游出行
During our orbital flight, the zero-gravity experience was strongest right after passing periapsis.
在我们的轨道飞行中，刚经过近拱点后的失重体验最为强烈。
日常对话
The spaceship reaches its periapsis when it's closest to the planet's surface.
当宇宙飞船最靠近行星表面时，它就到达了近拱点。
社交媒体
Just calculated the periapsis for my Kerbal space program! Getting better at these orbital maneuvers 🚀🌌
刚刚计算了我的坎巴拉太空计划的近拱点！越来越擅长这些轨道机动了🚀🌌
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