B. External fetal monitoring. The FHR is measured by focusing an ultrasound beam on the fetal heart. The fetal monitor interprets Doppler signals.

外监护。通过集中超声波束于胎儿心脏来描记胎心率，胎儿监护翻译多普勒信号。

youdao

We study the decay rate of solutions of beam equations with damping and external force.

研究含外力和阻尼项一类梁的横振动方程解的率减率。

youdao

The proposed photon virtual source model is suitable for accurately simulating arbitrary shape and intensity distributions of external beam.

本文提出的光子虚拟源模型能够较为精确地模拟计算任意形状和强度的外照射放射治疗射束分布。

youdao

External beam radiation involves zapping a patient with high-dose X rays generated by a machine called a linear accelerator.

FORBES: Men, Cancer & Hope

Or you can pick your poison, choosing between surgery to remove the prostate and one of two forms of radiation, external beam radiation and radioactive "seeds" implanted in the gland itself.

FORBES: Men, Cancer, & Hope