查询词典 chemical compound

Keywords compound priming system;detonating cord;detonating tube;same directional acute angle;reverse directional acute angle

复式起爆系统；导爆索；导爆管；同向锐角；反向锐角

Methods:Using 10% OP and 10% TWEEN-20 as increasing dissoluble agents, andPAN as developing dye,the absorption of the complex compound of cadmium was measured at 555 nm. The content of the tracecadmium in water sample was determined.

分别以体积分数为10％OP和体积分数为10％吐温-20为增溶剂，以PAN1-(2-吡啶偶氮-2-萘酚为显色剂，在555nm波长处测定水中镉络合物的吸光度。

The requirement of machining technology of aspheric surface optics parts by NC machine with Nanosys--300 aspheric surface ultraprecision compound machining system for single point diamond turning is introduced.

介绍了用金刚石单点车削的方法在&Nanosys--300非球面曲面超精密复合加工系统&数控机床上加工非球面曲面类光学零件时对加工工艺的要求。

This nonmutagenic amino compound 4 (via the investigation into Salmonella/mammalian microsome assay) was also employed as diazo moiety coupling with acet-J-acid to form a diazo acid dye 5. The new dye 5 can color wool at 2% or silk at 3% o. w. f. into black one. The investigation of the uptake of 5 and its color appearance showed that it was assigned to an acid bluish black dye and its blackness was more excellent than that of Acid Black 10B.

经过Salmonella／mammalian microsome assay测试，4表现为非诱变性，用4与乙醯J－酸作用得到新型双偶氮酸性染料（5）。5对羊毛和丝绸分别在2%与3%色度下浸染都得到黑色染样，考察了5的上染曲线，并对染样进行了测色研究，发现该染料属於酸性蓝黑染料，其黑度优於目前市场上流行的酸性黑10B。

A new convenient synthesis of a series of 1-aryl-2-propanones using aromatic amines as precursors, via diazo reaction and improved Meerwein arylation reaction under mild conditions, was achieved. In addition, 1-[3,5-bisphenyl]-2-propanone is a new compound among the synthesized compounds. This approach is an efficient synthetic method for the aryl-propanones with the different substituting groups.

以芳香胺为原料，经重氮化和改进的Meerwein芳基取代反应，合成了一系列的1-芳基－2-丙酮，其中1-（3，5-二三氟甲基苯基）2-丙酮是一个新化合物改进后的方法简化了合成步骤，提高了收率，可方便地用于在苯环上具有不同取代基的芳基丙酮的合成。

Through analyzing the technologies of back simple bowl , a set of compound die was designed.

通过对后朴碗工艺的综合分析，设计出一副复合模，能满足其精度要求，同时极大地提高了生产力。

The bending and pressing convex forming compound die for locking spring is designed, the die structure and pressing process are introduced, the product quality and production efficiency are improved.

针对锁紧片零件，设计了折弯压凸复合模，并介绍了模具结构和工作过程。

The solution is mainly characterized by changing the pH value of the solution between 2 to 6 by adding nitrogen compound into an acid dipping solution.

这种溶液的主要特征是通过在酸性浸渍溶液添加含氮化合物，使其pH值在2～6之间变化。

Through massive double-decked compound co-extruding experiments, has analyzed the problem of the mold appeared and proposed the modification plan for the mold design to be more reasonable and perf.

软面硬芯双层共挤复合PVC板材是一种具缓冲撞击的低成本塑料装饰板材，将会得到越来越广泛的应用。

Ethyl cellulose membrane material has produced in physical modification method. The fundamental characteristics of reverse osmosis on EC membrane can be correlated with HPLC experimental conditions. By using EC membrane material as column packing, double-distilled water as mobile phase, the retention times are measured with suitable inorganic and organic compound as solutes.3. Complying with the retention times, the partition coefficient of the solute and the ratio of the surface excess concentration of solutewith the concentration of the parent fraction are calculated .

利用物理改性的方法研制了乙基纤维素(Ethyl Cellulose，简称EC)膜材料，并将其作为高效液相色谱柱的固体填料，以高效液相色谱模拟反渗透实验平衡条件，以水为流动相，选择合适的无机物和有机物作为溶质，测定乙基纤维素对它们的相对保留时间及平衡分配常数K_A′。3。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48