查询词典 presence

The circular dichroism spectra of soluble CSL in the presence of dioxane showed that dioxane made the αhelicity of the CSL increase.

CSL在二氧六环介质中的CD谱的变化表明：二氧六环使CSL分子中的α-螺旋含量有所增加。

The synthesis of diphenylamine from aniline-phenol by liquid phase condensation in the presence of Pd/C catalyst was studied.

研究了在Pd／C催化剂存在下，通过液／固催化缩合反应由苯胺和苯酚合成二苯胺的方法。

In the presence of the combination of sulphuric and phosphoric acid, with sodium diphenylamine sulfonate as the indicator, standard solution of potassium dichromate was used to titrate total iron value.

试样以盐酸溶解后，在酸性介质中，先以氯化亚锡将三价铁大部分还原为二价，然后在钨酸钠指示下，再以三氯化钛将剩余的三价铁还原为二价，过量的三氯化钛以重铬酸钾氧化消除干扰，在硫磷混合酸存在下，以二苯胺磺酸钠为指示剂，用重铬酸钾标准溶液滴定全铁量。

Both our patients presented with an acute onset of facial diplegia accompanied by other mild symptoms such as diplopia, dysphagia, and neck and limb weakness. The presence of hyperreflexia confused us, and in both patients, cerebral disease was initially suspected. Brain MRI was unremarkable, but electrophysiologic studies indicated peripheral involvement of the facial nerves.

但2例患者进一步的脑部MRI检查均未见异常，电生理检查却均提示周围面神经受累；况且，2例患者的一些临床特点均另我们考虑到格林-巴利综合征的可能：患者1有前驱水样便病史，而患者2的脑脊液则表现出蛋白细胞分离现象。

In diplotene, lateral elements of a few SCs separate and the presence of fragmented SCs takes place.

在双线期除了个别SCs 侧生组分分开外，大多数SCs 发生碎片化。

Under the experimental conditions, the evaluation of catalytic activity on direct decomposition of NO show that the presence of Cu is necessary for improving activity at 600~800℃ among La0.9Ce0.1Fe(subscript 0.8-x)Co0.2YO3(Y=Cu, Zn, Ni) series, and in which L.a0.9Ce0.1Fe0.7Co0.2Cu0.1O3 has the highest activity, the conversion of NO decomposition maintains 80% and nearly 100% at 750℃. H2-TPR result proves that the higher activity is related to the mobility of lattice oxygen which is beneficial to the reproduction of active site for NO decomposition.

在实验条件下，对NO的活性测试结果表明，L0.9Ce0.1Fe(下标 0.8-x)Co0.2YO3(Y=Cu， Zn， Ni)系列催化剂在600~800℃范围内，掺杂Cu的复合氧化物具有较高的催化分解活性，其转化率始终保持在80%以上，反应温度为750℃时，几乎100%转化。H2-TPR结果证明，其催化分解活性高的原因是Cu的掺入使晶格氧活动性增强。

It is the pleasure of imagining a liveness, a directness, a presence.

这是一个快乐的活性想像，一个直接，一个存在。

The awful war; an awful risk; dire news; a career or vengeance so direful that London was shocked; the dread presence of the headmaster; polio is no longer the dreaded disease it once was; a dreadful storm; a fearful howling; horrendous explosions shook the city; a terrible curse.

可怕的战争；可怕的冒险；可怕的消息；一件恐怖得震惊了伦敦的事件或者说复仇；校长的可怕到场；脊髓灰质炎不再像以前是种恐怖的疾病了；可怕的暴风雨；可怕的嚎叫；可怕的爆炸震惊的这座城市；恐怖的诅咒。

In the military arena, too, officials are disarmingly humble, acknowledging the stabilising presence of the US Pacific Fleet and playing down any notion that China's navy wants to project power.

在军事领域亦是如此，中国官员谦卑得让人丧失戒心。他们承认美国太平洋舰队发挥着稳定局势的作用，并淡化有关中国海军意欲展示实力的说法。

But with the presence of disc jockey services, the word "boring" is just a myth.

但是，存在的唱片骑师的服务中，"无聊"只是一个神话。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐