Methods First derivative spectrophotometry was used.

方法一阶导数分光光度法。

youdao

Methods First, cellular toxicity test was performed.

方法：首先进行细胞毒实验。

youdao

Methods First, PTCD were made to set up sinus and confirm diagnosis.

方法先行经皮经肝穿刺引流(PTCD)建立窦道、确定诊断。

youdao

If you know first aid methods, you can be calmer and more helpful in case of emergency.

VOA: special.2009.08.11

The class is organized first to teach you the methods of the historical critical approach to the New Testament,and help you learn how to do those through exegesis and historical study.

首先，教授研究新约的,历史批评法,帮助你们学会如何进行注释及历史研究。

耶鲁公开课 - 新约课程节选

But it began a Critical Study of the poems for the first time and Critical Methods were applied to history for the first time ever, really, in the early nineteenth century and thereafter.

这开启了诗歌批判研究的先河,十九世纪初期,人们首次将批判理论应用于,历史文献的研究中

耶鲁公开课 - 古希腊历史简介课程节选

All commercial enrichment methods involve first gasifying the uranium with fluorine, creating the gas uranium hexafluoride.

FORBES: Energy & Genius

How about we start by fully researching all the free, less invasive methods, first?

FORBES: Genetic Engineering: A Food Fix?

Installation and associated costs for the first and second methods will be the responsibility of the franchisee.

FORBES: Lock Firm Onity Starts To Shell Out For Security Fixes To Hotels' Hackable Locks