For this reason , extreme radiation hardness and high power / weight ratio solar cells , which can work properly in van allen belts , must be developed 因此,为了能使通信卫星在vanallen辐射带正常工作,必须要有一种强抗辐射并且具有较高重量比功率的太阳电池。
As a result , the utilization of active material and the specific energy by weight of lead acid batteries by way of changing the parameters of allthese factors was improved 因此，我们可以通过改变上述参数来提高活性物质的利用率，从而提高铅酸电池的重量比能量。
Where the rate of content weight of uranium and thorium in nuclear source material is higher than five - ten thousandths , and the total weight of uranium and thorium does not exceed one kilogram 三核子原料中含铀、钍成份重量比在万分之五以上，而铀、钍之总重量不超过一公斤者。
Compared with traditional machine tool , parallel machine tool has such priories as high response velocity , high accessional technology value , and high adaptability to circumstance 与传统机床相比，并联机床具有刚度重量比大、响应速度快、环境适应性强和技术附加值高等优点。
Due to their simplicity in fabrication and excellent strength to weight ratio , stiffened steel panels are also widely used for construction of land based structures such as box girder and plate girder bridges 由于制作简单且有良好的强度重量比，加筋板也广泛应用于制造陆基结构物如箱梁和板梁桥等。
Able to fall from 1 . 7m drop to concrete , with no damage ! very strong laser head , just like the famous brand - symbol s , but the weight is lighter than symbol so it s firmly and no damage when it fall 非常坚固的雷射扫描头结构，就如现在的名牌产品symbol的雷射扫描头结构一样但重量比symbol轻所以非常坚固耐摔。
Adding the annual catch of the four fishing gears and then we can get the annual catch in hejiang section from 1999 to 2002 . the value was 104563 . 464kg , 65564 . 231kg , 123684 . 966kg and 107285 . 272kg , respectively ( 3 )渔获群体由-龄组成，以、 、龄个体为主，龄个体所占比例最大，其重量比达到了61 . 83 。
Pmts enjoy following advdsges over tr8ditional five - coordinates nc machine tools : high stiffness weight ratio , high feed speed , high machining precision , high additional technology value et ai 并联机床与传统五坐标数控机床相比有如下优点：刚度重量比大响应速度快加工精度高环境适应能力强技术的附加值高。
If the utilization of active material of lead acid batteries could be improved , the specific energy by weight would be increased and the single charge trip range of electric vehicles would also be increased 如果铅酸电池的活性物质利用率能够得以提高，那么它的重量比能量将得以提高，电动汽车充电一次的续驶里程将会提高。
The relevant experiments illustrates a . c . power is more suitable for deicing or snow - melting than d . c . silica fume can improve the dispersion of carbon fibers and then reduce the electrical resistivity of carbon fiber cementious composites . at a certain volume content , when the ratio of cement , sand and stone is l : l : 2 ( by weight ) , the properties of the cfrc is the best on the whole . ( 4 ) a self - adaptive fuzzy controller is designed to finish the total control procedure after considering all kinds of factors 大量实验研究发现：采用交流电是碳纤维导电混凝土用于融雪化冰时的最佳电源选择；采用硅灰能较好地提高碳纤维在基体中的分散性，有效降低碳纤维水泥基复合材料的电阻率；并在现有的级配比实验中发现了具有最好综合性能的配比，即在相同的纤维体积含量的情况下，导电混凝土的具有最好综合性能的配比是水泥、砂子、石子的重量比为1 : 1 : 2 。
