PTC

Herein, we describe a rapid, simple and practical procedure for the phase transfer catalytic ( PTC) synthesis of a wide range of α-hydroxy acids by means of a microwave-assisted addition reaction in one pot.

开发了一种快速、简单和实用的系列α羟基酸的合成方法，在微波辐照相转移催化的条件下实现了一锅法α羟基酸合成。

Background: The Chernobyl accident caused an unprecedented increase in papillary thyroid carcinoma ( PTC) incidence with a surprisingly short latency and unusual morphology.

背景：黑钙土导致短潜伏期和异常形态的乳头状甲状腺癌（PTC）的发生。

The reaction speed and selectivity for PTC and ultrasonic's application in indirect electro-oxidation was increased.

相转移催化剂和超声波在间接电氧化中的应用。提高了反应速度和产品选择性。

Financial Fit : This acquisition supports PTC's long-term revenue growth and operating margin goals.

财务收入—此次并购案,将帮助PTC达成 长期 的营运成长与获利的目标.

The PTC Effect of Carbon Black Filled Linear Low Density Polyethylene

线性低密度聚乙烯&炭黑复合物的正温度效应

PTC Shanghai 2007 was just held on October 10 at Shanghai New International Expo Centre.

10月10日上午,一年一度为期四天的PTC展览会 在上海新国际会展中心隆重开幕.

CT and PTC can be important assisting exarnination.

ct及PTC作为重要的辅助诊断方法.

There is no statistically difference between the PTC group and the normal group.

PTC组与正常组之间比较无统计学差异，但PTC组高于正常组。

The X ray Diagnosis of PTC with Maligant Lesions of Bile Ducts ( Analysis of 33 Cases )

胆管恶性肿瘤经皮肝穿刺胆管造影(PTC)的X线诊断 ( 附33例分析 )

Synthesis and Properties of Thick Film PTC Thermistor Paste on Stainless Steel Substrate

不锈钢基厚膜PTC热敏电阻浆料的制备与性能研究

The PTC nontaster mutation provides a remarkable amount of information about early human migration.

这个PTC味觉受体基因的突变,为研究早期人类迁徙提供了极为丰富的资讯.

The nodular goiter was found in 32.78 % patients with PTC and 28.57 % patients with FTC.

32.78%的PTC和28.57%的FTC患者伴发有结节性甲状腺肿.

Positive temperature coefficient ( PTC ) effect of carbon black ( CB ) filled nylon 12 ( PA 12 ) composites was studied.

研究了以尼龙12 ( PA12 ) 为基体树脂,炭黑 ( CB ) 为导电填料的高转变温度正温度系数 ( PTC ) 材料.

Study on Constitutes and Electric Capability of HDPE/ CB PTC Composites

HDPE／碳黑PTC复合材料组成与电性能研究

PTC taste threshold of 1008 Han people ( male 510, female 498; children 679, adult 329) was determined in Hebei province.

测定了1008名（男510名，女498名；儿童679名，成人329名）汉族人的苯硫脲（PTC）尝味阈值。

Effect of Carbon Black Treatment on PTC Properties of HDPE/ CB Composites

炭黑预处理对HDPE/CB复合物PTC特性的影响

PTC Heater is a kind of new surface-insulated one.

PTC发热 芯是一种表面绝缘的新型PTC发热体.

The research found that excellent performance of PTC materials can begotten in 1300 ℃ calcinations.

本课题研究发现，在1300℃下进行煅烧可以得到性能优良的PTC材料。

After parameters of single stage G-M type PTC were optimized, a new refrigeration temperature record of 11.1 K was achieved.

单级G-M型脉管制冷机经优化后，取得了11.1K的最低制冷温度，是当前国内外报道的最好结果；

Meanwhile, PTC Thermistor is heated to above the Curie temperature, Rt heating temperature exceeding the switch temperature TSW and leaping to the state of high resistance too.

与此同时，PTC热敏电阻也被加热到居里温度以上，Rt发热温度超过开关温度Tsw跃入高阻状态。

CT and PTC Study of Main Bile Ducts Invaded by Hepatocellular Carcinoma ( Analysis of 17 Cases )

肝细胞癌侵入胆管的CT与PTC研究 ( 附17例分析 )

In this paper, the complex impedance property of PTC ceramics has been investigated.

本文研究了PTC陶瓷的复阻抗特性.

Research of the Lead-free High Performance BaTiO_3 Based PTC Ceramic Powder with Sol-Gel Method

溶胶-凝胶法制备无铅纳米BaTiO3基PTC陶瓷粉体的研究

Study on PTC Heat-sensitive Component Replacing Air-conditioner Electric-heating Tube of 8K-type Locomotive

用PTC热敏元件取代8K机车空调电加热管的研究

Define and update the PTC each week.

每周确认和更新PTC文件.

Some organic polymers can form positive temperature coefficient ( PTC ) composites with the electric conduction materials.

某些有机高分子聚合物可与导电材料形成PTC复合材料.

The automatic enrichment valve is composed of PTC, wax and valve needle.

自动加浓阀主要由PTC 、 石蜡体和针阀组成.

Methods To adopt the way of deciding taste-blindness with threshold to determine the sensitivity to the taste on PTC of 219 Han nationality juveniles.

方法采用阈值法测定219名汉族青少年对PTC的尝味敏感性。

In particular, sensitivity to PTC and certain con-centrations of saccharin may have a genetic basis.

特别是对PTC和特定浓度的糖精的敏感性有一种遗传学的基础.

With the characteristic of constant temperature, the PTC heater does not need the temperature-controlling system.

PTC发热体具有恒温的特点, 不需要温度控制系统.