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Two sibling species Helicoverpa armigeraH(u|¨bner and H.assulta are serious crop pests in China.They have the similar morphological,biological and ecological characterstics,as well as they can even hybridize with each other.Their host plant ranges, however,are quite different.The former is a typical polyhpagous species,and its host plant range including at least more than 60 crop species such as cotton,corn,wheat,soybean, tobacco,and tomato,and 67 wild plant species from about 30 plant families including Malvaceae,Solanaceae,Gramineae,Leguminosae,etc.

可同域发生的棉铃虫Helicoverpa armigeraH(u丨¨bner和烟夜蛾H.assulta是铃夜蛾属两近缘种昆虫，二者具有相似的生物学和生态学习性，甚至杂交可育，但它们的寄主范围却截然不同，棉铃虫是多食性昆虫，烟夜蛾则是典型的寡食性昆虫。

The furnace, U-beam separator, and superheater enclosures are constructed entirely of top-supported, gas-tight, all-welded membraned tube walls which do not require hot expansion joints.

炉膛、U型钢分离器，以及过热器的外壳由顶部支撑、气密、全焊接的膜式管墙构成，因此不需要膨胀节。

In this paper, we researches the sum of U- relative deficiency of meromorphic functions, which generalize .

本文我们主要研究亚纯函数导数的U相对亏量和，得到一些推广结果。

To use two passive U-tube anti-rolling tanks with different natural frequencies can provide very good rolling reduction over a wide range of metacentric height of ship.

使用两个具有不同固有频率的被动式U型减摇水舱能给横稳心高变化范围很宽的船舶提供很好的减摇效果。

On the assumption of un-stirred, by reducing the dimension of system, the steady-state system takes the following form.here, u v are two competitive microorganic species.

在非均匀搅拌的假设下，对系统进行参数无量纲化和降维处理后，模型的平衡态即其中，u，v是两种相互竞争的微生物。

Biotite-bearing monzonitic quartz schist is parametamorphite with a zircon U-Pb age of 978±13 Ma.

黑云二长石英片岩为副变质岩，锆石U-Pb年龄(978±13) Ma。

The "U" of the word MULK' stands for USB. The most notable feature of the MULK storage device is its ability to show its capacity from its exterior. It uses LED technology and its brightness relates to its capacity. It is equipped with a lithium battery so that the light can last for 12-hours.

设计说明： MULK中的U是代表USB随身碟的意思，MULK的最大特点在於它能够外显容量，这是运用渐层LED灯的技术，并由电路板判断配合输入容量来决定灯光亮的高度，且有内建锂电池，可让灯光亮12个小时。

Let u and v be nonconsecutive vertices on c.

设u和v是c上不相邻的两个顶点。

In New York he roomed with O'Brien while they attended the Academy of Dramatic Arts. In 1923 they both got nonspeaking parts as robots in "R.U.R".

在纽约的戏剧艺术学院学习时他仍和老友欧布莱恩共住一室，1923年两人同时获得了影片《R.U.R》中两个没有台词的机器人角色。

It shows that the critical exponents of conductivity, u, are in good agreement with the mean-field percolation value and in clear disagreement with the universal value in three dimension. This nonuniversal behavior can be interpreted as a result of the interaction between CB and polymer. The influences of the property and volume fraction of CB and radiation crosslinking on conductivity and critical exponent were also studied.

发现电导率临界指数u与三维普适值不符，而与平均场逾渗的指数相吻合，认为电导率的非普适行为主要是由于炭黑粒子之间和炭黑—聚合物之间的相互作用所引起，考察了炭黑的基本性质、含量和辐照交联对电导率及其临界指数的影响。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。