Opium is classed under the head of narcotic.

鸦片是归入剂一类的东西。

Conclusion Mepivacaine is an effective, safe and reliable anesthetic agent for dentistry and oral surgery.

结论甲哌卡因是一种安全可靠、效果好的口腔用局剂。

The anaesthetist gave the patient an anaesthetic.

师给病人施剂。

The potent and rapid-acting opiates (fentanyl, sufentanil, alfentanil) can be used as the sole induction agents in cardiovascular surgery where hemodynamic stability is critical.

（芬太尼、叔芬太尼、阿芬太尼）强效快速起作用的吗啡类药物，由于其对血液动力学稳定可作手术单独诱导剂。

Results It showed the changes of field potentials and neural firing rates in hippocampal CA1 region tinder anesthetization of Pentobarbital sodium and Urethane respectively.

(2)海马CA1区神经元在不同剂作用下放电频率变化具有规律性。