A procedure on synthesis of nitrophenyl acetic acids with high yield of 100% has been developed catalysed by sodium methylate or ethylate partially instead of sodium phenolate at certain ratio of sodium alkoxide, nitrotoluene and sodium phenolate.

Synthesis of 3-Methyl amino-1-phenylpropyl Alcohol It is also known that sodium ethylate and diethyl phenylmalonate interact together to give ethyl Phenylacetate and diethyl carbonate.

3-甲胺基-1-苯基丙醇的合成新工艺众所周知，乙醇纳和二乙基苯基丙二酸酯反应可以得到乙基乙酸苯酯和二乙基碳酸酯。

4-Nitro-m-cresol and benzyl chloride, with sodium ethylate as the catalyst, synthesized 5-benzyloxy-2-nitrotoluene, the yield was 86.9%.

4-硝基间甲酚与氯化苄在乙醇钠作催化剂的条件下制备2-硝基-5-苄氧基甲苯，收率为86.9%。

Lab Study on Preparation of High Ethoxy Ethyl Cellulose

高乙氧基乙基纤维素合成实验研究

The output here specifies that the Ethernet packet contains IP data, specifies the overall packet size and time, and the destination and source Ethernet addresses for the packet.

这里的输出表明Ethernet数据包包含了IP数据、全部数据包大小和时间，以及数据包的目标和来源地址。

So in this example, we first need to extract the ethernet packet, including the data payload, from the raw network packet.

所以在本例中，我们首先需要从原始网络数据包中提取Ethernet数据包，包括数据有效负载。

Since we are looking for IP packets, we can check for IP packets by looking at the Ethernet packet type.

因为我们寻找的是IP数据包，所以我们能通过检查Ethernet数据包类型来检查IP数据包。

Ethernet packet headers, including the Ethernet source and destination address, packet size and the Ethernet packet type.

Ethernet数据包头，包括Ethernet来源和目标地址，数据包大小和Ethernet数据包类型。

The FuTURE software mostly includes Ethernet packet handling, PPP protocol, MAC, and controlling/ monitoring tasks.

整个FuTURE资源管理软件的实现中，主要包括以太网分组处理、PPP协议、MAC以及控制/监控等任务。

Ethernet Packet Transmission Over OTN Control Plane

以太网报文在OTN控制平面的传送

The node can receive standard Ethernet packet and output corresponding current loop.

此节点可以接收标准以太网报文，转换成相应的电流输出。

Diethylstilbestrol ( DES), as an ideal medicine to study the function of environmental estrogenic hormone, is a kind of lipidic hormone with a long half-life, which easily accumulated itself in adipose tissues.

二乙基己烯雌酚（Diethylstilbestrol，DES）是一种合成雌激素，脂溶性，半衰期长，易在机体脂肪组织中聚集，是目前研究雌激素样环境内分泌干扰物作用机理的理想药物模型之一。

Research on Cost Estimating Method Based on Feature Mapping of Mechanical Products

基于特征映射的机械产品成本估算方法研究

Research on Strategy of Product Cost Estimating Design Method of Reducing Cost

产品成本估算策略及降低成本的设计方法研究

However, often because of the time restraints in design phase, the structures design alternatives, cost estimating and optimization are seldom considered in the structure engineering.

但是，由于设计阶段的时间限制，一般很少针对结构工程进行多方案的设计、成本估计和优化。

Accurate cost estimating plays an important part not only in structures design optimization but also in client's project decision and cost controlling.

准确的成本估计不仅在结构设计优化中起着重要作用，而且在业主的项目决策和投资控制中起着重要作用。

Based on the methods of location estimating and location parameter estimating, the development history of current and future challenges in wireless position location are reviewed and location estimating techniques for mitigating the influence of non-line-of-sight ( NLOS) propagation are discussed.

本文以定位算法与定位参数估计为主线，综述了蜂窝通信系统中移动台定位的发展过程、现状、取得的进展以及面临的挑战，特别是对减轻非视距传播影响的定位算法进行了详细讨论。

In chapter 2 the theory and technique of nonlinear parametric models are discussed in detail, including the estimating principles and techniques of nonlinear parametric models.

本文在第二章主要讨论了非线性模型参数估计的理论和方法，包括非线性模型参数的估计准则和解算方法。

Estimating approaches, techniques, models, and tools

评估的方法、技术、模型和工具

All estimating techniques can be grouped into one of three categories: experience-based, learning-oriented, and those based on algorithmic ( statistical or mathematical) models.

所有的评估技术可以分为以下三类：基于经验的模型、面向学习的模型和基于算法（统计或数学）的模型。

Popular estimating techniques and models

流行的评估技术和模型