查询词典 double-helical

Double channel bandpass sampling method for wide band IF signal is presented to settle the problem of blind zone,which exchanges one more sampling channel for simplification of clock circuit and band pass filter.As a practical reconnaissance receiver, real-time processing performance must be considered.Digital channelizing method lays the base of parallel processing by multi DSP chips and discarding of the redundant data resulting from double channel bandpass sampling.

针对带通采样存在着频率覆盖盲区的问题，提出了宽带中频信号双通道带通采样的方法，通过增加一个采样通道既解决了传统处理盲区方法中设计复杂采样时钟电路、高矩形系数滤波器的困难，还缓解了后续DSP处理压力。

Objective Through the methods of double-blind, physical experimental research has been taken on oral liquid for reinforcing kidney in sale and ShengLiJun oral liquid to enhance triathlon's testosterone level in serum.Methods Through the experimental design of double-blind, chiasm and comparison.

目的 通过双盲对分组对比实验对提高铁人三项运动员血清睾酮的市售补肾口服液和生力君口服液进行了人体实验研究方法采用双盲交叉对比实验设计。

"Try east early " shaddock is the shaddock that breeding of station of experiment of east wind farm goes kind admirable breed, ever by committee of science and technology of city of double edition accept is judged on the west for this locality optimal shaddock fruit the first, appoint it is what city of double edition accept popularizes on the west advocate grow variety.

"东试早"柚是东风农场试验站选育出的柚类优良品种，曾被西双版纳州科委评为本地最佳柚果第一名，并指定为西双版纳州推广的主栽品种。

It begins to inactivate when the temperature is beyond 40℃. However, CDH has the ability to resist high concentration of H2O2.CDH catalyze a typical reaction of double substrates and double products, which fits the Cleland'sPing-Pong nmechanism.

CDH具有很强的耐受过氧化氢的能力，在50mmol/LH2O2下保持12小时，仍保存近80%的活力，CDH催化的是一典型的双底物双产物反应，符合Cleland的兵乓反应机制。

The main products of Trump Card are all steel double level vacuum extruder, compact vacuum extruder, non-vacuum extruder and all sorts of necessary accessories, such as JKY60/60-4.0, JKB50/45-3.0, JKR45/45-2.0, JKRJ45/45-2.0, GS80×60, SJJ300×50, ZQT650×200, ZQP24 and so on. The third generation of all steel double level vacuum extruder is widely applied to making various rigid plasticity and semirigid plasticity extrusion of load-bearing and non-load-bearing hollow bricks that its hole ratio is 25%-70%, from low-plastic materials like clunch, shale, coal gangue and coal powder.

乐山市泰辉机械制造有限公司制造的产品：JKY60/60—4.0，JKB50/45—3.0，JKR45/45—2.0，JKRJ45/45—2.0，GS80×60，SJJ300×50，ZQT650×200，ZQP24等系列全钢双级真空，紧凑型真空，非真空制砖机组及烧结制品生产线各种配套设备、全自动码坯系统等，广泛适用于粘土，页岩，煤矸石和粉煤灰等低塑性原料生产孔洞率25％—70％的各种承重、非承重空心砖坯的硬塑、半硬塑挤出成形，烧结、自动码坯系统等。

An optimization model for combinatorial double auction based on integer programming method is established and transformed into single-sided auction,which will benefit to solve combinatorial double auction with the method used for single-sided auction and to make the problem much more easier.

本文运用整数规划的方法建立了一个组合双向拍卖问题的一般化模型，并通过逐步转化，把组合双向拍卖简化为单边拍卖，有助于利用求解单边拍卖的方法来求解复杂的双向拍卖问题，使这一问题的研究得到了简化。

In this paper the features of constructional details and behaviors of double thin-wall piers of continuous rigid frame bridges were firstly analyzed. According to the condition of deformation compatibility, a relationship between the inner forces on the coping of pier and the single inner forces of the double thin wall pier was established.

本文首先从双薄壁墩的结构和受力特点出发，根据主梁与双薄壁墩的共同变形协调条件，建立墩顶内力与双薄壁桥墩单墩内力之间的关系，考虑强度和稳定约束，建立基于通用有限元程序的双薄壁墩墩中距和壁厚的优化数学模型。

Just as a double convex lens enlarges, so a double concave lens reduces.

正象双凸透镜可以放大那样，双凹透镜也可以缩小。

Much olefin of conjugate of discovery short cable length (number of conjugate double key is less than 6) to lengthen and increase quickly of time as degradation, grow catenary conjugate much olefin at the same time (the growth rate that number of conjugate double key is more than or is equal to 6) is far be less than conjugate of short cable length much olefin.

发现短链共轭多烯烃(共轭双键数小于6)随着降解时间的延长而急剧增加，同时长链共轭多烯烃(共轭双键数大于或等于6)的增长速率远小于短链共轭多烯烃。

The length of certain bond and the number of conjugate double-bond affected OWF〓 greatly, OWF〓 changed linearly with the change of bond length (for planar azobenzene derivatives and cyanine derivatives) and the change of conjugate double-bond number (for conjugate alkene,β-carotene and lycopene).

3键长和共轭双键数对OWF〓有较大的影响，OWF〓随键长（如平面型的偶氮苯衍生物、菁类和氧杂菁类等）和双键数（如共轭烯烃类、β—胡萝卜素和番茄红素等）的变化而线性变化。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失