Using the health risk assessment model of chemical carcinogens and non-carcinogens and combing with the maximum acceptable risk level recommended by relative agencies and authors, the paper develops the risk assessment of carcinogenic and non-carcinogenic PTS in different ambient medium of Shanghai.

When comparing the exposure dose of the same PTS in different ambient medium, it is found that it was the biggest dose in urban parks and roadside dust and the next was in the way of vegetable ingestion. 4.

对不同介质下同种PTS类物质的暴露量比较发现，城市公园及路边灰尘环境下的暴露量最大，其次是蔬菜摄取途径。

In 1952, Bondi solved the hydrodynamic version of the star in a static ambient medium, who showed a certain gravitational capture radius, got Bondi accretion rates.

Bondi（1952年）研究了恒星对静态气体的吸积问题，确定了引力捕获半径和得到了Bondi吸积率。

According to corresponding evaluation model, the paper estimates the exposure dose of PTS through three exposure ways in different ambient medium.

根据相应的评价模型，对多介质环境中PTS的暴露量进行了估算。

Effect of Dynamical Behavior of Long Span Cable-stayed Bridge with Ambient Medium

环境介质对大跨斜拉桥动力特性的影响

It has been proved both by the test and by the theoretical analysis that the self-cooled induction motor of the enclosed type dif-fuses its heat in such a passage: the winding → the stator core → the frame → the ambient medium.

实验测试与理论分析都证明：自扇冷式封闭型感应电动机的散热路径为绕组→定子铁心→机座→周围介质。

When the hydrodynamic front reaches the ambient medium it acts like a fast-moving piston.

当流体力学波阵面抵达周围介质时，它像一个运动迅速的活塞。

Objective To introduce experience of ambilateral posterior communicating aneurysms ( PcoAA) that treated by micrurgy, and discussed its operating modus and operating juncture.

目的介绍8例双侧颈内动脉-后交通动脉瘤显微手术的经验，对其显微手术的方法、方式及手术时机等进行探讨。

A definite judgment of the location, size and direction of the aneurysm before operation is very important to determine whether clip ambilateral aneurysm from mono-lateral approach.

术前判断动脉瘤的位置、大小和指向对于预防术中动脉瘤破裂和决定是否从一侧入路夹闭双侧动脉瘤是十分重要的。

On Prohibition to Director's Self-representation and Ambilateral Representation in the trade with His Company

董事自己代表和双方代表与公司交易行为之禁止探讨

Comparing the test results of working frequency interflow high voltage and monopolar pulse high voltage, showed that highest removal efficiency was gained with ambipolar pulse voltage;

与工频交流高压、单极性脉冲高压的试验结果比较表明，双极性脉冲高压取得了最高的降解效果；

A steady state plasma is maintained by electromagnetic field and ambipolar diffusion of charged particles is caused by electrostatic field of space charge.

放电为磁场激励型，稳定的等离子体由电磁场所维持，空间电荷产生的静电场引起荷电粒子的双极扩散。

This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation;

本文对双极性调制的无刷直流电动机仿真，分析了转速和调制频率对转矩影响；

Ambipolar Diffusion Length in Semi insulating GaAs

半绝缘GaAs中的双极扩散长度

Removal of chlorobenzene and toluene by dielectric barrier discharge ( DBD) of ambipolar pulse high voltage

双极性脉冲高压介质阻挡放电降解氯苯和甲苯

The high speed insulated gate bipolar transistor ( IGBT) transport model is derived by ambipolar transport theory in this paper.

借助双极传输理论导出了高速绝缘栅双极晶体管（IGBT）传输特性的物理模型。

The influence of thermal diffusion on metastable copper density and the ambipolar diffusion on electron density is quantitatively analyzed.

定量地给出了粒子热扩散项对铜亚稳态粒子密度及电子的双极扩散对电子密度的影响。

The findings of this work provides a general guideline for designing stable ambipolar and n-type organic semiconductors materials.

这一结果为我们设计合成稳定的n型与双极性有机半导体分子提供了指导。

The ambipolar diffusion coefficient of charged copper species in copper vapor laser is theoretically deduced.

推导了铜蒸气激光器带电粒子的双极扩散系数。

and ambition for a better life is now universal.

改善生活的理想现在具有普遍性。

The statement laid bare his ambition for world conquest.

此声明完全暴露了他征服世界的野心。