Introduce the working principle of phased-shifter in traditional PAA system . Put much emphasis on the demonstration of the characteristic of none beam squint of TTD network in wide instant bandwidth and give several ever-advanced principles of realization of the network .

介绍了传统相控阵雷达中移相器的工作原理，重点论证了光真实时间延迟网络在宽瞬时带宽情况下的无波束 偏斜特性，并介绍了业已提出的几种真实时间延迟网络的实现原理。

In TTD group the average operation time was 119 minutes ( 77-198 ) bile leakage occurred in 3 patients which stopped spontaneously on the 2nd to 6th postoperative day ; average hospital stay was 8.4 days after operation .

T管引流组手术时间 77~198min，平均119min，术后出现胆漏3例，经保守治疗于术后2~6d自止，术后平均住院时间8.4d。

For the regions without incidence level division EWMA ( threshold is 1.2 is 0.3 ) is the optimized method and TTD is 2 days sensitivity is 91.76 % specificity is 86.73 % with 3740 signals . 3 .

若不区分发病水平地区，则在全省优选出的预警方法是阈值为1.2，λ为0.3的EWMA，其预警效果是及时性为2天，灵敏度为 91.76%，特异度为86.73%，信号数为3740条。

Traditional tourism destination ( TTD ) is defined . Traditional tourism destinations are facing challenges threatening Beijing Shanghai Guilin and so on .

说明了传统旅游目的地的 涵义，并以北京、上海、桂林等传统旅游目的地 受到 的 “威胁 ”为例，指出传统旅游目的地所面临的挑战。

TTD may act by means of suppressing the function of the P-170 glycoprotein in drug-resistant tumor cells .

推测 TTD可能是通过抑制耐药肿瘤细胞膜上P－170糖蛋白的功能而起作用的。

AIM To study the reversal action of apoptotic resistance in multidrug resistant ( MDR ) cell lines by tetrandrine ( TTD ) and mechanism involved in it .

目的探讨粉 防己碱逆转MDR细胞凋亡抗性的作用及其机制。

The results showed that TTD could significantly potentiate the toxicities of DNR and HHT in drug-resistant leukemic cell lines ( K562 / A02 K562 / HHT ) the IC50 values decreased 15.8 bold and 19.1 fold respectively ( P0.05 );

结果 TTD可明显提高DNR及HHT对耐药细胞（K562／A02，K562／HHT）的毒性作用，IC50值分别下降15.8及19.1倍（P＜0.05）；

Fiber-optic TTD Techniques for Phased-array Antennas

用于相控阵天线的光纤 真 延时技术

Mechanism for Preparation of Condensed Rings Compounds Containing Nitrogen Analyzed with HPLC and ESI-MS

电 喷雾 质谱 法和高效液相色谱法对 dpq、 ttd合成机理探讨

Objective To investigate the reversal mechanism of Tetredrine ( TTD ) on multidrug resistance in leukemia cell line K562 / ADM.

目的研究汉防己甲素（ TTD）对慢性粒细胞白血病急性变白血病细胞株K562/ADM多药耐药（MDR）逆转的机理。

Objective To strengthen the control of blood quality ensure the safety of blood for clinical use and effectively contain the occurrence of transfusion transmitted disease .

先进的设备有助于提高用血安全目的加强血液质量管理，确保临床用血安全，有效 控制输血传播性疾病（ TTD）的发生。

An optical true time delay ( TTD ) is a means for optically controlling phased array antennas ( PAAs ) . Fiber-optic TTD techniques for PAAs are reported as well as their architectures .

光真延时是对相控阵天线进行 光控的一种重要手段。文章介绍用于相控阵天线的光纤真延时技术和各种真延时结构。

Optimization of Surface Condenser TTD of Indirect Air Cooling System

简接空冷系统表面式凝 汽器 端 差的优选

Ttd is a private enterprise whose business is mainly on manufacturing and processing cable bridge metal slot and busbar and so forth .

科 世 隆企业重要制造抛光电缆桥架、金属线槽、母线槽等为一体的民营企业；

A comparative study on the effect of two bisbenzylisoquinolines tetrandrine ( TTD ) and berbamine ( BBM ) and verapamil ( VRP ) on reversing multidrug resistance was reported .

比较了2种结构相近的双苄基异喹啉（BBI）生物碱粉防己碱（ TTD）、小檗胺（BBM）与维拉帕米（VRP）逆转多药抗药性的作用。

Results The content of collagen type ⅰ and type ⅲ in the group of TTD was significantly reduced comparing with normal saline group and untreated group the difference was significant ( P0.01 ) .

结果 汉 防己 甲 素治疗组 肝内Ⅰ、Ⅲ型胶原蛋白的含量明显下降，与生理盐水对照组及未治疗组比较，差异有显著性（P0.01）。

This difficulty however can be overcome if True-Time-Delay ( TTD ) network which is made up of fiber and photonic devices is used .

对于这一问题，若采用由光纤和 光电子元件实现的真实时间延迟网络就可以解决。

There was cooperative action in combination of TTD with MDR-1 antonym RNA CDA-II and hyperthermia .

TTD与MDR-1反义核酸、CDA-II、加温有协同逆转作用；CDA-II与加温有协同逆转作用；

Continous TTD system based on CFG

基于CFG的连续 TTD系统研究

The Trinidad and Tobago dollar ( currency symbo TT $ currency code TTD ) is the currency of Trinidad and Tobago . As of July 2005 there were 6.27 Trinidad and Tobago dollars to the United States dollar or 7.57 to the euro .

特立尼达和多巴哥元（货币符号tt$，货币代码 ttd）是特立尼达岛和多巴哥岛的货币，2005年7月，一美元兑换6.27特立尼达和多巴哥元，或是一欧元兑换7.57特立尼达和多巴哥元。