查询词典 PETN

When it rains in the Petén, mosquitoes swarm in such clouds that today's Maya have to drive them away with greasy smoke from torches burning cohune palm nuts.

一到雨季，蚊子象黑云一们涌来，所以，直到现在，玛雅人还得用烧羽状叶棕榈树所产生的烟来熏跑蚊子。

When it rains in the Petén, mosquitoes swarm in such clouds that today's Maya have to drive them away with greasy smoke from torches burning cohune palm nuts. In the dry season, the heat bakes the swampy bajos , or bottomlands, the rivers fall, and drought threatens.

佩滕地区一旦下雨，蚊子便如鸟云般成群涌现，现在的玛雅人就必须以火炬燃烧羽叶棕榈果实，用带油脂的烟驱赶它们，到了干季，热气炙烤着遍布沼泽的洼地；河川水位降低，干旱随时会降临。

It was shown that this method can eliminate the interferences from external noises,and improve the accuracy of PETN detection.

计算表明该方法可以有效消除外界噪声对信号的干扰，提高探测的准确性。

The surface treatment method of PETN by means of a surfactant is introduced.

介绍了用表面活性剂处理太安的方法，对处理后的太安进行了静电性能测试和分析，得出最佳抗静电用表面活性剂的种类及使用浓度。

The reduced expression of PETN might play an important role in carcinogenesis and progression of bladder cancer. Detection of PTEN might be useful for judgement of tumor development and prognosis.

结论PTEN基因突变或缺失所导致的表达障碍可能在膀胱癌的发生、发展中发挥重要的作用；PTEN表达的检测有助于肿瘤的诊断和判断其预后。

P. 01. Conclusion PTEN gene could inhibit microvessel production. So PETN mutations or deletions might play an important role in tumor progression and angiogenesis of bladder cancer.

PTEN基因突变或缺失所导致的表达障碍可能在膀胱癌的恶性进展、肿瘤浸润转移及血管生成过程中发挥重要的作用并与肿瘤的预后相关。

Mr. Gibbs, in a separate appearance on ABC News's 'This Week,' said the president has also ordered a review of U.S. capabilities for detecting threats 'to, quite frankly, answer the very real question about how somebody with something as dangerous as PETN could have gotten onto a plane in Amsterdam.

吉布斯还在美国广播公司的"本周"节目中说，奥巴马总统还下令评估探测威胁的能力，以坦率地回答带有PETN炸药这类危险物品的人是如何在阿姆斯特丹登上飞机的。

Based on the insensitive principle, cohering principle and the influence of the proportion of ingredient on the safety, a new kind of insensitive explosive is developed with PETN as primary material and with wax, polyisobutylene and black lead as desensitizers and adhesives. The experiments on the sensitivity of blast wave, mechanical sensitivity and the character of burning were carried out.

充分考虑了钝感机理、粘结机理和组分配比对安全性的影响特性，研制了一种以 PETN 为主体，蜡、石墨、聚异丁烯为钝感剂与粘结剂的新型钝感炸药，进行了冲击波感度、机械感度以及火烤特性试验。

Explosives experts have reportedly said just five ounces of PETN packed into a breast implant would be enough to blow a "considerable" hole in the side of a jumbojet, causing it to crash.

据业内人士介绍，即使只在一个乳房内部植入5盎司的PETN，其爆炸后也足以让大型客机机身豁开一个大洞，从而机毁人亡。

Explosives experts have reportedly said just five ounces of PETN packed into a breast implant would be enough to blow a "considerable" hole in the side of a jumbo jet, causing it to crash.

据业内人士介绍，即使只在一个乳房内部植入5盎司的PETN，其爆炸后也足以让大型客机机身豁开一个大洞，从而机毁人亡。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。