查询词典 acetone

The samples were extracted with acetone by blending and the extract was partitioned with methenyl chloride. The extracts were cleaned up by a column of silica gel.

样品以丙酮提取，三氯甲烷萃取，硅胶柱净化，液相色谱测定，最小检出量为0 5×10-9g。

Acetylpyruvic acid methyl ester can be synthesized by the condensation of dimethyl oxalate and acetone in the presence of sodium methoxide.

叙述了在催化剂甲醇钠的存在下，以草酸二甲酯和丙酮为原料合成乙酰丙酮酸甲酯的工艺。

We ever reported cellulose is in propyl of Xi of ionic liquid 1-- chloric salt of Zun of 3- methylic Mi (the homogeneous phase acetyl in Am ImC L) converts reaction, falling without activator condition, one pace gets the CA of different DS, get acetone but the CDA[12] of dissolve.

我们曾报道了纤维素在离子液体1-烯丙基-3-甲基咪唑氯盐中的均相乙酰化反应，在无催化剂条件下，一步得到不同DS的CA，并得到丙酮可溶的CDA[12]。

The method uses carboxyl methylic cellulose sodium spreads out an agent to be chloroform as bind agent;- acetone (7:3); Chan Bo grows linear scanning law to determine,λ S=360 Nm.

方法采用羧甲基纤维素钠作为黏合剂；展开剂为氯仿-丙酮(7：3)；单波长线性扫描法测定，λS=360 nm。

Methods: We used DNCB paper method (DNCB solution absorbed in a small piece paper instead of DNCB acetone solution directly dropped on to the skin) to treat 90 cases of alopecia areata, 22 cases of verruca vulgaris, 140 cases of molluscum contagiosum, 120 cases of verruca plana and 6 cases of immuno related suppurative diseases for clinical analysis.

对采用DNCB法治疗的斑秃、寻常疣、传染性软疣、扁平疣的临床疗效及伴发化脓性疾患病例的随访结果进行回顾性分析。结果：斑秃治愈率为33.3%，扁平疣为35%，寻常疣及跖疣分别达56%及66%，传染性软疣为41.8%。

As for the mesh screen type, its volume multiplied by 100% its porosity was the desirable filling amount. Having considered the forgoing findings, the researchers add up the amounts of the above two types as the filling amount of the composite micro structure, with the filling fluid being acetone. In fabricating the heat spreader, a copper pipe is added to serve the filling purpose. What is more, because the manufacturing process is not carried out in a totally clean environment, there is some noncondensible gas left, which will have a negative effect on the performance of the heat spreader. Consequently, the copper pipe has to be reserved so that the exhaust gases can be evacuated after the filling is done.

Kempers 文中可知，沟槽结构之填充量以微结构体积之80%为最佳，网格结构则是以网格体积乘上孔隙率(porosity，φ)之100%为最佳，故本研究便以两者之加总做为复合式微结构之填充量，填充液为丙酮；在均温基板之制造程序中，会加装一铜管做充填之用，且而由于制造过程并非于一完全干净之环境下完成，故板内会有一些不利于均温基板作用之非凝结性气体noncondensible gas (NCG残留，因此铜管需保留一定的长度，以方便充填完成后将废气排出之用。

In the process of wet dentin bonding, acetone-based adhesives have higher microtensile strength than alcohol-water-based adhesives. Although two types of bonding system have full resin penetration in the bonding interface, the latter possess distinct overwet phenomenon.

在牙本质湿粘接过程中，以丙酮为溶剂的粘接系统的微拉伸强度，高于以酒精和水为溶剂的粘接系统；虽然二者的粘接界面中都可以观察到粘接剂在牙本质表面充分的渗透，但后者有着更为明显的过度润湿现象。

ABSTRACT The decomposition temperature and heat of cefazolin sodium pentahydrate were measured by the differential scanning calorimetry technique. Its solubility data in various mixed solvents of water ethanol, water acetone, and water 2 propanol were obtained by the laser method and fitted by the exponential model.

在溶液结晶过程中结晶物系的物理化学性质(如溶解度、熔解热、介稳区等)对结晶操作、结晶收率、产品纯度和产品的粒度分布均有较大影响，结晶物系的热力学性质是结晶动力学和结晶工艺研究的基础。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl-2-acctonc, phenylacetic acid, 1-phenyl-2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、3，4-亚基二氧苯基-2-丙酮、苯乙酸、1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

Successful separation of Cd-pheophytin a, Cd-pheophytin b, chlorophyll a, chlorophyll b, pheophytin a and pheophytin b in 14min was firstly accomplished by reversed-phase HPLC at a flow rate of 0.8ml/min, with the mobile phase of methanol: acetone (80: 20, v/v).

首次以甲醇：丙酮＝80：20为流动相，流速为0.8ml/min，在C〓柱（5μm，4.0×250mm）上，14min内成功实现了镉叶绿素a和镉叶绿素b配合物与叶绿素a，b和脱镁叶绿素a，b的高效液相色谱分离。

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。