查询词典 in the first instance

First principal component：第一主成分无忧雅思网

First derivative, 一阶导数 无忧雅思网*}x:@#K/w(@.H5B:k | First principal component, 第一主成分无忧雅思网UY NJ AA7C9l2EF | First quartile, 第一四分位数

first principal point：第一主点

first order spectrum 第一级光谱 | first principal point 第一主点 | first radiation constant 第一辐射常数

first revisal：初次改样

first rest 休眠初期 | first revisal 初次改样 | first roller 第一机架辊

first runner-up：第二名

first class cabin 頭等艙 | first runner-up 第二名 | first runner-up 第二名

first order segregant：初级分离子

first division segregation 第 次分裂分离 | first order segregant 初级分离子 | first, second, third, backcross generation (B1 第 、第 ;第 回交子代

first serer：第一发球员

第一发球权 first inning | 第一发球员 first serer | 第一双打 first pair

first spawner：初产卵鱼

first fishing season 初渔期 | first spawner 初产卵鱼 | first twist; lower twist; preliminary twist 下捻

first spawner：初次产卵鱼

First South Korean-US Joint Army Corps;韩美联合第一军团;; | first spawner;初次产卵鱼;; | First Special Session Devoted to Disarmament;第一届专门讨论裁军问题的(大会)特别会 议;;

first spermatocyte：初级精母细胞

规定种的第一法则 first species rule | 初级精母细胞 first spermatocyte | 第一分裂末期 first telophase

first telophase：第一分裂末期

初级精母细胞 first spermatocyte | 第一分裂末期 first telophase | 初发突变 first-step mutation

seal oil pressure：密封油压

"seal of bearing ","轴承密封" | "seal oil pressure ","密封油压" | "seal ring ","密封环,止漏环"

osteographer：骨论学家

choreographer舞蹈动作的设计者 | osteographer骨论学家 | glyphographer电刻者