With colonic involvement, perirectal fistulae are common.累及结肠的直肠周瘘管常见.Tentorial dural arteriovenous fistulae are rare clinically.小脑幕脑膜动静脉瘘临床上比较少见.Objective To explore the angiographic appearances of the hemodynamic chang...
需要30万吨谷类补充库存。Three hundred thousand tons of cereals are needed to replenish stocks.该保险公司将接受仓库库存货物或长期国库券作为担保。The insurance company will take warehouse stocks or treasury bonds as surety.弹药的库存正在减少。Stocks of ammunition were...
In this paper, a discrete stage - structured epidemical model is proposed and studied.本文主要讨论了离散的阶段结构传染病模型.OBJECTIVE To explore the administration measures of air condition usage in SARS epidemical period.目的研究传染性非典型肺炎流行期间...