未经改善的

Simulation results show that significant gain in BER of the new system can be obtained compared with the unprecoded system.

仿真结果表明，相对于未经过预编码矩阵的系统，新系统的误码率性能有明显改善。

Effects of dry temperature and dry time on properties of heat cured sand and the relationship with binder composition are as follows:sands bonded by binders that are not modified have high strength when dry temperature is high and dry time is long,but their anti-wettability power is poor . Sands bonded by binders that are modified by B but not modified by M can be dried quickly and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M but not modified by B can also be dried quickly to obtain maximum strength,then the strength becomes lower when they are dried continually for more time. and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M as well as by B at the same time can be dried quickly to obtain maximum strength at low temperature and short time. But the anti-wettability of sand mold is best when they are dried at high temperature and long time.

烘干温度和烘干时间对热硬砂性能的影响及其与粘结剂改性的关系是：未经改性剂B和改性剂M改性的粘结剂砂，脱水速度较慢，烘干温度越高，时间越长，则硬化强度也越高，但未经改性的粘结剂热硬砂的抗吸湿性较差；经改性剂B而不经改性剂M改性的粘结剂热硬砂，烘干硬化速度较快，强度也高，但在高湿度下的抗吸湿性不好；经改性剂M改性而不经改性剂B改性的粘结剂热硬砂，烘干时强度先随烘干时间升高至最大值后，继续烘干时强度又出现下降；经改性剂B和经改性剂M共同改性的粘结剂热硬砂能在短时间和较低的烘干温度下就可烘干到最高强度，即烘干脱水的速度较快，但试样的抗吸湿性差，若在更高温度和更长时间下烘干，试样的抗吸湿性得到改善，综合考虑烘干强度和抗吸湿性要求，对于φ30×30mm试样，理想的烘干温度是200℃，烘干时间20分钟。

Better fuel efficiency and specially blended fuels that produce less carbon monoxide and unburned organic compounds have improved air quality.

更佳功效的燃料和特配的燃料会产生少一些的一氧化碳和未经燃烧的有机混合物，这便改善了空气质量。

The unratified Equal Right Amendment.

未经批准的平等权的改善。

But this rally differs from last year's sizeable but short-lived upturns, which were driven by hopes that obscure and untested policy shifts would fix the problems in the banking sector. This rally is underpinned by a widespread improvement in industrial sector data and financial conditions.

但此轮上涨与去年强劲而短暂的反弹不同--当时是因为市场预期模糊且未经检验的政策转变将解决银行业的问题，而此番上涨的基础，则是工业部门数据和金融状况的普遍改善。

The COD city of outstanding net already exceeded 600, and after its are located in the new storeroom of Beijing to build, the addition of type of merchandise will improve position of original be in short supply.

卓越网的货到付款城市已超过600个，而其位于北京的新库房建成之后，商品种类的增加将改善原有的缺货状态。【以下内容为IT者网站提供英文翻译，未经授权请勿转载

The system also provides better communication between the Fire Services Communication Centre and all fire appliances, fireboats and ambulances, thus improving operational efficiency.

新系统提供更多频道，并限制未经许可的使用者侵入通讯系统，令消防通讯中心与所有消防车、灭火轮及救护车之间有更佳的通讯效果，有助于改善行动效率。

We are interested in your suggestions about appointing us to be the single dealer.

对贵方建议由我方担任独家经销商一事，我们颇感兴趣。

Three types of empty-shell marriages have been identified. In a devitalized relationship husband and wife lack excitement or any real interest in their spouse or their marriage.

一种是死气沉沉的婚姻：在这种婚姻关系中夫妻俩对于配偶或婚姻缺乏激情，或者缺乏真正的兴趣。