查询词典 a trace

This study developed a new method on the determination of carcinogenic disinfection by-products-trace dichloroacetic acid and trichloroacetic acid in tap water by ion chromatography-electrospray-tandem mass spectrometry(IC-ESI-MS/MS).

建立了一种采用离子色谱-串联电喷雾四级杆质谱联用技术检测自来水中可致癌的饮用水消毒副产物二氯乙酸和三氯乙酸的方法。

The sky Fu of his facing garden pond descended center of palm, a few slices moxa grass which take to burn bright trace remnants leaf floated to fall in to go to, think again is the sweet flower crash of the fish presses near to come over right away-immediately and dissatisfiedly spread go to, at pure deeply such as under the surface of mirror show the glorious scale of miscellaneous color.

他向着池塘的上空俯下了手心，几片带着烧灼痕迹的艾草残叶飘落下去，以为又是香甜花蕊坠下的鱼儿马上凑近过来--随即不满地散去，在清透如镜的水面下炫耀着杂色的锦鳞。

The hippocampus plays a critical role during the consolidation of trace eyeblink conditioned responses. However, the role of its related structure such as dentate gyms remains unclear.

海马在追踪性眨眼条件反应的巩固过程中发挥重要作用，但解剖学上与其紧密联系的齿状回在此过程中的作用尚不清楚。

Study on spectrophotometric determination of ferrum with phenylfluorone in thepresence of β-CD and OP ;2. A new method for the determination of trace Crwas studied,which was based on surfactant OP enhancement.

在HAc-NaAc缓冲溶液介质中，在乳化剂 OP 存在下，痕量铬对过氧化氢氧化中性红的褪色反应有很强的催化作用，据此建立了测定微量铬的催化动力学光度法。

As the matrix of Christianity, God of Judaism has a fluctuant developing trace.

作为基督教母体的犹太教，上帝观念的形成有其历史的发展轨迹。

This can usually be corrected by a chelated foliar spray of trace elements containing iron.

这通常可以矫正一个螯喷施微量元素含铁质等。

"There is clear evidence that the individuals who took over the houses were forensically aware and that they took precautions not to leave any trace, so that makes it more difficult for us," Detective Superintendent Andy Sproule told a news conference in Belfast on Wednesday.

侦查组长安迪？斯普鲁周三在新闻发布会上说：有明确证据表明绑架并占领了银行职员家的劫匪警觉性很高，注意不留下丝毫线索。因此我们的工作就变得更加困难了。

The pigment of Berberis heteropoda Schrenk is a type of anchocyanin and it is strong in resistance against light and to some extent, good in enduring heat and low consistence oxide. But it is poor in resistance against reductant and preservative. It can be applied to the condition of PH. It is also found that sucrose and most of metal ions do not exert negative effects on the stability of the pigment, except Fe3+, Fe2+and low consistence Pb2+, which have some extent effects. Adding stability matter can improve its stability. The harm trace elements contains are within requirement of the National Standard on food safety, As the lexicological study indicates that the pigment does not have any toxicity and mutagenesis, it can be used as edible pigment.

结果表明：大孔树脂吸附-解吸附法纯化黑果小檗色素实验室工艺简单易行，色素回收率高；黑果小檗色素属于花色苷类色素；耐光性好；对热有一定耐受性；对低浓度氧化剂有一定耐受性；耐还原性差；对防腐剂耐性差；适用PH＜6条件下使用；蔗糖和大多数金属离子对色素无不良影响，但Fe~(3+)、Fe~(2+)、Sn~(2+)和低浓度pb~(2+)对色素有影响，加入稳定剂后，可提高色素的耐热性、耐氧化性、耐防腐剂能力；经对有害微量元素进行检测和毒理试验表明，该色素安全无毒，可以作为天然食用色素使用。

The formation of hydrochemistry ingredient is primarily leaching and dissolving, and the trace element ingredient is rich, which reflect that the groundwater passed through a long and complex runoff process cycle.

水化学成分的形成以溶滤、溶解作用为主，微量元素成分丰富，反映了地下水经过了漫长和复杂的径流及深循环过程。

In here, a lot of stories were already lost. I tried to search for those gloomy faces from the trace of the years. There interwove all kinds of expressions around me, but I was not able to see them clearly.

在这里，很多故事已经失传，我试图从岁月的痕迹里，寻找那些忧伤的面孔，我的身边，明明交织着各种各样的表情啊，可我就是看不清他们的模样。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。