sidereal是什么意思_sidereal怎么读_中英文释义(含例句用法)

sidereal (adj.): also siderial, 1630s, "star-like;" 1640s, "of or pertaining to the stars," earlier sideral (1590s), from French sidereal (16c.), from Latin sidereus "starry, astral, of the constellations," from sidus (genitive sideris) "star, group of stars, constellation," probably from PIE root *sweid- "to shine" (cognates: Lithuanian svidus "shining, bright"). Sidereal time is measured by the apparent diurnal motion of the fixed stars. The sidereal day begins and ends with the passage of the vernal equinox over the meridian and is about four minutes shorter than the solar day, measured by the passage of the sun over the meridian.

词态变化

2. A sidereal day is about 4 minutes shorter than a solar day.: 一个恒星日比一个太阳日大约短4分钟.

3. A sidereal day is shorter than a mean solar day by 3 minutes and 56 seconds.: 恒星日比平均太阳日短三分五十六秒.

4. Tropical year, and sidereal year are two different concepts.: 回归年与恒星年是不同的两个概念.

5. A solar day is four minutes longers than a sidereal day.: 一个太阳日比一个恒星日长4分钟.

sidereal time 恒星时

sidereal day 恒星日(较标准日约短...

sidereal year 恒星年(等于365天...

sidereal table 恒星表

sidereal midnight 恒星时子夜

sidereal month 恒星月

sidereal hour 恒星时

sidereal chronometer 恒星时计

mean sidereal time 平恒星时

sidereal period 恒星周期

sidereal clock 恒星钟,恒星时钟...

sidereal hour angle 恒星时角

sidereal noon 恒星时正午

sidereal astronomy 恒星天文学

sidereal noon 恒星时正午

sidereal variation 恒星变化

sidereal clock 恒星时钟，恒星钟

sidereal watch 天文表

sidereal midnight 恒星时子夜

sidereal minute 恒星分

sidereal universe 恒星宇宙

sidereal day n.恒星日(较标准日约短四分钟)

sidereal second 恒星秒

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