释义 |
- 1
Johann Franz Encke, Director of the Berlin Observatory, finally determined a value for the AU based on all these parallax measurements: 153,340,000 km. 柏林天文台主任约翰·弗朗茨·恩克最终根据所有这些视差测量结果确定了天文单位的一个值为153,340,000公里。 - 2
Reasonably accurate for the time, that is quite close to today's value of 149,597,870 km, determined by radar, which has now superseded transits and all other methods in accuracy. 那个数值与今天雷达测定的149,597,870公里相当接近,就当时来说准确度很合理,雷达在精度上已经取代了凌日和其他所有方法。 - 3
Objective To observe the change of blood serum sialic acid in experimental animal with bearing cancer, while there are no normal reference value on Wistar rats and KM mice blood serum sialic acid. 目的为了便于观察荷瘤实验动物血清唾液酸的变化情况,也鉴于国内文献尚无大鼠和小鼠血清正常参考值。
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