丙酮

When the concentration of tested gases was 2000 mL/m3, chloroform, ethylene dichloride, formaldehyde and benzene did not interfere with the determination of acetone.

当各测试气体浓度均为2000 mL/m3时，三氯甲烷、二氯乙烷、甲醛和苯气体不干扰丙酮的测定。

According to people who had moustaches, inhaling the air component quantitative analysis and found that the air sucked into the presence of dozens of hazardous substances, including phenol, toluene, acetone, isoamyl asked diene, and other carcinogens,, Who had moustaches, who inhaled the air pollution index, is 4.2 times that of ordinary air.

据对留有胡子的人吸入的空气成分进行定量分析，发现吸进的空气中含有几十种有害物质，其中包括酚、甲苯、丙酮、异戊问二烯等多种致癌物，留有胡子的人吸入的空气污染指数，是普通空气的4.2倍。

A new mathod is studied for the synthesis of diketone s with the crosscoupling reaction of organotin reagents and diacyl chlorides catalyzed by cellulose oxyphosphine palladium complex compound.

本文首次采用纤维素氧膦-钯络合物为催化剂，以丙酮为溶剂，有机锡试剂与二元酰氯偶联合成二元酮化物。

Cefminox sodium reacted with 2,4 dinitrophenol to form a charge transfer complex in methanol acetone and can be quantitatively determined by spectrophotometric method at 403 nm.

利用头孢米诺钠与2，4 二硝基苯酚在甲醇丙酮介质中反应，形成电荷转移络合物，采用分光光度法测定。

Diphenylamine contents in single base propellants were determined by means of a single-sweep-square-wave polarography after the treatment of nitrosation of DPA.

将单基发射药亚硝化后用单扫描方波极谱法测定溶液中的二苯胺含量，用丙酮溶解单基发射药试样，使用组成与待测样品相同的单基标准样品作工作曲线。

For the determination of the chlorophyll in seawater, pigments of marine algae are extracted with 90 % acetone by the following three methods: 1 grinding in a homogenizer, 2 extracting by placing the samples in darkness for a period of time,and 3 using a sonic disintegrator.

本文讨论了用90％丙酮从海藻中提取叶绿素进行测定的三种提取方法(研磨法、浸泡提取法、超声波粉碎法)的最佳条件。并对三种提取方法的提取效率进行了比较。

Acetone was first time used as the dispersant, which dramatically shortened the cycle of the vertical deposition method.

创新性的丙酮作为分散剂，将垂直沉积法的生长周期从几周缩短为几天。

The nano-Si3N4 dispersibility in acetone was characterized by the volume of suspending layer and TEM.

通过测定氮化硅在丙酮中的悬浮层体积和悬浮液的透射电镜分析来表征其分散性。

The result indicated that the prepolymer had good dissolubility in acetone and good reserved stability under room temperature.

研究结果表明，室温下该预聚体在丙酮中具有优良的溶解性及良好的贮存稳定性。

It crystallizes in the monoclinic space group C2/c, with a=1.6953(3)nm, b=1.9241(4)nm, c=1.7760(4)nm,β=94.75(3)°. Each Gd ion is coordinated by two oxygen atoms from two different radicals NITPh(OCH3)3 and six oxygen atoms from three hfac molecules to form eight-coordinated dodecahedron geometry.

Gd离子采取八配位的模式，两个氮氧自由基作为单齿端基配体分别以氮氧基团的氧原子与Gd离子配位，三个六氟乙酰丙酮阴离子分别以两个氧原子与Gd离子配位，构成十二面体。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。