General requirements for built-in hop anti-jamming module of ultrashort waves .

嵌入式超短波跳频抗干扰模块通用要求。

Propagation of ultrashort pulse laser in nonlinear medium .

非线性介质中超短激光脉冲的传播。

At an average price of about $ 37.75 , I bought the proshares ultrashort 20 + year treasury etf , ticker ' tbt ' .

我以37.75美元左右的平均价格买进了prosharesultrashort20年期以上美国国债交易所交易基金（etf），代码为tbt。

Evaluation on the therapeutic effect of ultrashort wave on chronic prostatitis patients .

超短波治疗慢性前列腺炎疗效评价。

Effects of ultrashort wave with drug therapy on superficial soft tissue infection .

超短波配合药物治疗外科浅部软组织感染疗效观察。