“中国的无霜期”的概念、定义、翻译、参考文献-科学参考

单词	中国的无霜期
释义	中国的无霜期 Encyclopedia 理学中国的气温释 frostless period in China中国的无霜期一年内终霜日与初霜日之间的持续日数。一年中春季最后一次出现白霜的日期称终霜日，秋季第一次出现霜的日期为初霜日。无霜期长短不含初、终霜日，各年的无霜期差异很大，通常以其多年平均值表示。
随便看	flight test debriefing flight test design flight test emergency process flight test for adaptibility flight test for demonstration and verification flight test for detection and awareness system flight test for eviromental control system flight test for initial airworthiness flight test for military aircraft flight test for parachute flight test for personal protective equipment flight test for stealthiness chracteristics flight test instrumentation flight test master plan flight test of carrier rocket flight test plan flight test report flight test resources flight test safety flight test safety monitoring flight test sheet flight test site flight test site for special air vehicle flight test strategy flight test system safety

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。