查询词典 chemical fiber

According to the feature that deformation resulted from water absorption and mildew appear mainly on the rabbet surface of ccf , this paper adopts rsst to spray a special waterproof sealant on rabbet surface of ccf , so that the sealant can get into fiberboard to certain extent by means of capillarity and penetration , blockage the holes between fibers and capillary , cut up passage of water and change the properties of soakage and sorption to water in capillarity and fiber . at the same time , solidified sealant can form a compact waterproof pellicle on rabbet surface so as to prevent water and humidity from fiber ' s expansion and mildewing

针对吸水变形、霉变主要发生在地板企口表面的特征，采用企口表面全封闭法，在复合强化地板企口表面喷涂特殊的防水封闭剂，使其依靠毛细管作用及渗透作用进入板内一定深度，堵塞木纤维之间的空隙及毛细孔通道，截断水分传递的渠道，并改变毛细孔壁及纤维的表面性质以不利于水的浸润与吸附，同时其固化后能在企口表面形成一层致密的憎水薄膜，防止水分、湿气从企口侵入板内引起木纤维膨胀变形、发霉等现象。

Finally, We analyze and experimentally demonstrate that both the bandwidth of the fiber Bragg grating's short wavelength loss and the bandwidth of fiber Bragg grating's reflection increase with the increase of strain gradient along the length of grating.

最后，我们对光纤光栅的反射和短波损耗的应变特性作了理论分析和实验测试，发现在光纤光栅的反射带宽随光栅轴向应变梯度的增加而增加的同时，光栅短波损耗带宽也随光栅轴向应变梯度的增加而增加。

In recent years, the fiber grating external cavity semiconductor laser regarded as one of the candidate light sources of DWDM systems, has received considerable attention. Usually, it is thought that the lasing wavelength of a FGESL is locked at the Bragg reflection wavelength of fiber grating.

由于FGESL的激射波长主要由光纤光栅的布拉格波长确定，因此选择具有合适布拉格波长的FG就能使FGESL的激射波长处于预置波长处；同时，由于FG的布拉格波长受温度变化的影响相对较小(～0.01nm／℃)，因此FGESL与DFB-LD相比具有更高的温度稳定性。

In discussing the properties of reflection and refraction of fiber grating, the coupled-mode equation, envelope function, transform matrix formalism, multilayer and optical path approximation are used for describing the linear and nonlinear characteristic of optical fiber grating.

在分析光栅的反射和透射规律时，采用了耦合模式法，包络函数法，转换矩阵法，多层介质薄膜法以及光程法，这些方法虽然具有不同的数学和物理模型，但在分析光纤光栅这一特殊的波导结构时，可充分展现它的线性和非线性特性。

The distributed optical fiber sensors based on optical time domain reflectometry are the easiest ones to become products in all these distributed optical fiber sensing technology.

而在众多分布式光纤传感技术中，基于光时域反射计的分布式光纤传感器是最容易实现工程化、产品化的技术。

This paper introduces the classification of fiber reinforced concrete and fiber composite materials in the role.

本文简要介绍了纤维混凝土的分类及纤维在复合材料中的作用。

The fiber art is a kind of material art. At one level, the representability of the material can determine the form and the style of fiber art.

纤维艺术是材料的艺术，材料的表现力从某种程度上决定了纤维艺术的形式与风格。

It was shown that the asymmetry in the elastic modulus results from the compressive residual stress in the fiber root and the asymmetry in the yield strength results from the tensile residual stress in the matrix and compressive residual stress in the fiber.

分析表明，纤维根区域的压缩残留应力造成弹性模量的不对称性，基体拉伸残留应力和纤维的压缩残留应力造成屈服强度的不对称性。

Finally, we simulate the relationship of the residuary intensity modulation coefficient and the scale factor stability of fiber-optic gyro by using the Matlab simulation tool. The simulation results further explain the effect of residuary intensity modulation on digital closed-loop fiber-optic gyro scale factor stability.

最后，对所得出的残余强度调制系数与光纤陀螺标度因数稳定性的关系进行了Matlab仿真，通过仿真结果，更进一步说明残余强度调制对数字闭环光纤陀螺标度因数稳定性的影响。

Through the interferencing light intensity under a sine-wave modulation signal analysis, the output signal of fiber-optic gyroscope is demodulated. And then the change of the output signal of gyro is gotten. Through the analysis of the change we know that the effect of residuary intensity modulation on the performance of Interferometric Fiber Optic Gyroscope is related with the precision and accuracy requirements of IFOG. The higher precision, the more obvious effect.

本文首先通过正弦波调制下干涉信号光强分析解调出光纤陀螺的输出信号，进而得出残余强度调制存在的情况下陀螺输出信号的变化情况，同时，通过分析陀螺信号的变化说明残余强度调制对光纤陀螺性能的影响与陀螺精度要求有关，精度越高，其影响越明显。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。