The first hyperpolarizability is studied at HF/6-31G level by coupled perturbed Hartree-Fock (CPHF) method.

采用耦合微扰（CPHF）方法在 HF/6-31G 水平上对巴比妥酸衍生物的第一超极化率进行了计算。

youdao

Well, if we wanted to draw that, we have HF, whoops — It looks something like that.

如果我们想画他，哎呀，它看起来有点像那个某个东西。

youdao

Another bill (HF 1640) would require the companies to fund state-employed pharmaceutical experts to provide clinicians with the latest evidence-based prescribing information.

另一项议案(HF 1640)规定制药公司给受雇于国家的医药专家提供经费，为临床医师提供最新确证的处方信息。

youdao

Well, if we wanted to draw that, we have HF, whoops --It looks something like that.

如果我们想画他，哎呀，它看起来有点像那个某个东西。

麻省理工公开课 - 固态化学导论课程节选

And so this is the H-F bond in HF.

所以这是氟化氢中的氢氟共价键。

麻省理工公开课 - 固态化学导论课程节选

The new VIXIA HF R-series camcorders feature a new easy-to-use 3.0-inch capacitive touch panel screen for intuitive functionality.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device

All of the new VIXIA HF R-series camcorders offer a higher capacity battery, nearly doubling the recording length over previous models.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device

Designed for everyday shooting, Canon's expanded VIXIA HF R-series camcorder lineup improves upon numerous features, including image quality, sharing capabilities and the user experience.

ENGADGET: Canon's latest VIXIA camcorders stream and share with your mobile device