Attack by scavengers and bacteria, chemical decay, and destruction by erosion and other geologic agencies make the odds against preservation very high.
食腐动物和细菌的攻击、化学性腐烂,以及侵蚀和其他地质作用的破坏,导致无法保存的可能性非常大。
Ants store food, repel attackers and use chemical signals to contact one another in case of attack.
蚂蚁储存食物,击退攻击者,并使用化学信号联系彼此以防被攻击。
For billions of years, certain bacteria and fungi have produced chemical substances to protect them from attack from other microorganisms.
数十亿年以来,某些细菌和真菌通过产生化学物质来保护自己,抵御来自其它微生物的攻击。
This apparently walks back from a Bush-era declaration that underscored the possibility that the United States might use nuclear weapons if it suffered a chemical or biological attack.
这显然是走回布什时代的宣言,强调了美国可能会使用核武器如果它受到了化学或生物武器的袭击的可能性。
Lethal chemical Agent Countermeasures reviews some of the measures taken to defend against chemical attack.
致死性化学毒剂对策,综述了防御化学袭击的措施。
When we get to the colligative properties, we'll attack it from the point of chemical potentials.
当我们考虑依数效应时,我们从化学势的角度出发。
The acids in the food begin to attack and dissolve the metal lining of the can, and one of the by-products of this chemical reaction is hydrogen gas.
食品中的酸性物质开始溶解罐的金属内层,这种化学反应会产生氢气。
Observers believe some form of chemical weapon was used in the attack because seven monks and a novice were rendered unconscious for several days.
观察家认为,在攻击中使用了某种形式的化学武器,因为有7名僧侣和一名见习僧侣因为此次袭击而昏迷了好几天。
According to recent studies, a caterpillar can sense when a plant is about to unleash its chemical weapons and counter by producing anti-toxins to neutralize the plant's attack.
据最新研究表明,毛毛虫可以感应植物何时准备释放“化学武器”,而分泌有毒物质抗体,与植物抗衡。
The exercise simulated a coordinated cyber attack on information technology, communications, chemical, and transportation systems and assets.
演习模拟了一次协同网络攻击,目标是信息技术、通信、化学和交通系统与设施。
JERUSALEM (Reuters) - Israel's cats and dogs can breathe easy; in the event of an Iraqi biological or chemical weapons attack on the Jewish state they will be protected by pet-friendly gas masks.
战争一旦爆发,以色列的猫狗可以呼吸自如;如果伊拉克使用生化武器对这个犹太国家发动攻击,宠物们可以戴上专为它们制作的防毒面具而受到保护。
Chemical weathering was beginning to attack the unweathered bedrock.
化学侵蚀作用开始攻击还未侵蚀的岩床。
The host trees resist the fungi in physical or chemical manner, the fungi attack trees in association with beetles.
寄主树木对伴生菌的抗御作用主要是通过物理防御、化学防御进行的。
Iron rusts at its exposure to the open air on account of the corrosion made by the destructive chemical attack of a metal coming into contact with such media as air water and moisture.
金属在接触空气、水和湿气等介质时会受到破坏性的化学侵蚀,由于这种腐蚀,铁暴露在露天时要生锈。
Corrosion fatigue. A type of failure that results from the simultaneous action of a cyclic stress and chemical attack.
由循环应力和化学腐蚀同时作用导致的一类失效。
Alongside Ventress, Durge unleashed a horrible chemical weapon attack on the Gungan colony moon of Ohma-D 'un.
和文崔斯一起,德奇释放一种可怕的化学武器攻击冈根人的殖民地——卫星奥马·德恩。
Both mechanical and chemical forces attack these weaker spots and begin the processes which form arches.
无论是机械和化学的力量攻击这些薄弱点,并开始形成的过程,拱门。
They are outstanding for their hardness, density and resistance to thermal shock, wear, chemical attack and self-lubricating property.
它具有硬度高、密度高、抗热振性、耐磨性抗化学腐蚀性和自润滑性好等特点。
The resistance to chemical attack of NSAAS cement in acid solution, sulfate solution, sea water was studied.
研究了中性钠盐碱矿渣水泥在酸性溶液、硫酸盐溶液和海水中的抗化学侵蚀性能。
Test results on resistance to chemical attack indicate that NASC possesses more excellent anti-chemical attacking property than that of Ordinary Portland Cement.
耐化学腐蚀试验表明新型碱矿渣水泥具有比普通硅酸盐水泥更优的抗化学侵蚀性;
Ten people packed into a sweltering bunker near the Iraqi border seconds after a chemical weapons attack, looking for direction on what to do next, and who was in charge?
在遭到化学武器袭击后我们十个人马上就挤在伊拉克边缘地区的一个蒸笼般的掩体里。下一步应该怎样做呢?谁会成为领导人呢?
The Fiberfrax Duraboard family exhibits excellent chemical stability, resisting attack by most corrosive agents.
Fiberfrax Duraboard系列具有优异的化学稳定性,可以抵抗大多数腐蚀剂的侵蚀。
According to recent studies, a caterpillar can sense when a plant is about to unleash its chemical weapons and counter act by producing anti-toxins to neutralize the plant's attack.
据最新研究表明,毛毛虫可以感应植物何时准备释放“化学武器”,而分泌有毒物质抗体,与植物抗衡。
Product has excellent high temperature physical properties and resistance to chemical attack, widely used in various parts of small blast furnace lining.
产品具有优良的高温物理性能和抗化学侵蚀性能,广泛应用于中小高炉炉衬的各个部位。
Product has excellent high temperature physical properties and resistance to chemical attack, widely used in various parts of small blast furnace lining.
产品具有优良的高温物理性能和抗化学侵蚀性能,广泛应用于中小高炉炉衬的各个部位。
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