达的例句大全

Benzyl alcohol is the most important aromatic alcohol. Nowadays benzyl alcohol is synthesized by the hydrolysis of benzyl chloride in the presence of alkali, but with almost 10-20% benzyl ether, the by-product.

苯甲醇是最简单的，也是最重要的芳香醇，目前合成苯甲醇主要是通过氯化苄直接碱性水解，但是现有方法的副产物二苄醚含量达到10%～20%。

EPA had attempted to temporize by allowing California to take "reasonable extra efforts" to comply.

环境保护局一直想法拖延时间允许加利福尼亚采用合理的额外的努力去达标。

The method adopts the frequency domain masking technique to mask the peak fields of the radar echos' Fourier transform data, and uses the fractional correlation comprising of Fractional Fourier Transform ( FrFT) and inverse Fourier transform to detect the ARM only in one-dimensional searching.

该方法利用雷达回波的频域（Fourier变换）数据，根据尖锋作遮隔处理后，直接运用基于分数阶Fourier变换（FrFT）和Fourier逆变换的分数阶相关方法，通过一维搜索来检测ARM。

In half of the trials, the subjects'awareness of the angry faces was prevented by backward masking with a neutral face.

试验的前半部份，受试者对于愤怒脸部的意识，被一张无情绪表达的脸所产生地相反掩蔽作用所阻碍。

Clone of S gene in occult hepatitis B virus infection and construction of prokaryotic expression vector

隐匿性乙型肝炎病毒S基因的克隆及其表达载体的构建

Expression of foreign genes in adult rats' central nervous system by use of defective herpes simplex virus type 1 vectors

利用缺陷型单纯疱疹病毒载体在大鼠中枢神经系统表达外源基因

OBJECTIVE To illustrate the gene packing transduction and the optimization of gene expression of lentivirus vector as well as the lowest activity of different slow virus vectors sum up the production transduction efficiency and biological security of lentivirus heredity system.

目的：针对慢病毒载体的基因组装、转导及基因表达的优化论述，及不同种属的慢病毒载体的最低活性加以说明，同时对慢病毒遗传体系的产生、转导效率和生物安全性进行总结。

In non-line-of-sight propagation ( NLOS) environment, the location performance of Chan ′ s algorithm is significantly degraded because the time difference of arrival ( TDOA) measurement is biased by a NLOS error.

在非视距传播（NLOS）环境中，到达时间差（TDOA）测量值受NLOS误差的影响而产生偏差[1]，使得Chan算法[2]的定位性能显著下降。

Oxygen ECR/ RP plasma etches diamond successfully with an etch rate up to 8 μ m/ h. The etch rate and surface morphology are influenced by biasing frequency and self biasing voltage.

在射频偏压辅助下，氧等离子体成功地对金刚石膜进行了刻蚀，刻蚀速率最高可达8μm/h，偏压频率和直流自偏压大小均会影响刻蚀速率和刻蚀表面形貌。

Plane wave solutions of biaxial crystal in principal axis coordinate system

双轴晶体中平面波解在主轴坐标系下的表达

Objective To evaluate age-related changes in expression of HSP70 in odontoblasts of bicuspid teeth.

目的观察热休克蛋白（HSP）70在前磨牙成牙本质细胞表达的增龄变化特点。

The network can transmit one bidirectional relay voice or two bidirectional direct voices, and data packets transmission supports both unicast and broadcast with automatic routing. Secondly, the TDMA networking protocol is implemented on the VHF frequency hopping radio.

该协议支持最多32个节点组网，可实现一路中继双向话音或两路直达双向话音，支持单播及广播数据报文和自动路由。2.在超短波跳频电台上实现了该TDMA组网协议。

A Quantitative Method of the Reliability Evaluation and Failure Criteria on Radar Solid Transmitter

雷达固态发射机可靠性评估和失效判别的定量方法

The robber maiden lifted up little Gerda, and took the precaution to bind her fast on the Reindeer's back; she even gave her a small cushion to sit on.

小强盗女孩把小小的格尔达抱到它的背上，而且很谨慎地把她系牢，甚至还给了她一个小垫子作为座位。

Relationships, especially new ones, are particularly fraught with gift-giving difficulties because you haven't reached a point of mutual directness in terms of what you dislike about each other.

情侣们，尤其是那些刚刚牵手的情侣，挑选礼物对他们而言尤为棘手，因为你们的关系还没有熟到可以直接表达不满。

Through analyzing and computing satisfy environmental noise criteria, a sort of noise absorption wall and sound insulation wall are introduced, which obtained good effect. It has reference value for outdoor machine design in air conditioning system.

在分析和计算了要满足环境允许噪声标准后，给出了一种吸音墙体和隔声挡墙的设计实例，达到了良好的治理效果，对空调系统室外机设计有参考价值。

The Formula of Ship Economic Criteria with the Credit Payback Mode

计及贷款偿还方式的船舶经济指标表达式

Video detector with obvious advantages, is replacing gradually the typical detection technologies, such as loop detector, infrared and radar sensors.

视频检测技术由于其明显的优势，正逐步取代磁感线圈、红外、雷达等常用的检测手段，是未来发展的趋势。

Radar Video Accumulation Circuit Based on Charge Coupled Device

基于电荷耦合器件的雷达视频积累电路

Reaction mechanism of the mixtures is tried to change by entering metal powder and metal oxides, organic matter that contains much carbon and special binders into the mixtures in order to produce more substances of infrared extinction and arrive at the aim of infrared extinction.

通过向赤磷发烟剂中加入金属粉和金属氧化物，富碳有机物和特殊的粘合剂，试图改变赤磷发烟剂的燃烧反应机理，使之生成更多的红外消光物质，达到红外消光的目的。