土壤微生物

The Battle of the Somme followed. Britain lost sixty thousand men on the first day.

在Somme战役中，英国仅开战的第一天就损失了六万人。

Induced eddy currents circulate, and if of sufficient amplitude and duration, can cause neuronal depolarization. Compared with other stimulations, MS is non-contact, non-invasive and no pain. It is these advantages that make it gaine much popularity in clinic within the last decade. On the other hand, there are still some problems technically, such as bad focusing of MS coil, low frequency, the power is too large for reaching MS threshold in existence MS instrument.This paper presents general guidelines for designing and constructing a magnetic stimulator.

磁刺激具有非接触、非侵入、无痛等优点，近十几年来，在临床的诊断和治疗中得到广泛的应用，但现有的磁刺激仪存在如磁线圈聚焦性差、重复频率低、达到刺激阈值所需要的功率消耗过大等问题。