as for model animal, mice is not feasible, and sd, wistar are suitable. wky is not apt to be spread for expensive price.

due to the expensive cost of lead fluoborate, the author tries to explore a practical feasible process of pb plating with pb ( ac)_2 · 3h_2o as main salt.

为了解决氟硼酸铅价格昂贵的问题，本文试图用Pb（Ac）2·3H2O为主盐，探索出一个实际可行的配方及工艺。

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as the imported chip is expensive, so the independent research and development of high stability with high performance dc-dc buck-based power management chip is very necessary.

由于进口芯片的价格昂贵，所以自主研发具有高性能高稳定性的BUCK型DC-DC电源管理芯片是非常必要的。

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because the cost of wireless sensor network is limited, a large number of sensor nodes in monitoring area of only a few expensive node to use a gps device to obtain their own position accurately.

无线传感器网络由于成本限制，被监测区域内布放大量传感器节点中只有少量价格昂贵节点能够使用GPS设备获得自身的准确位置。

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the metallocene catalyst is expensive, so most polypropylene in domestic industry is prepared by ziegler-natta catalyst.

由于茂金属催化剂价格昂贵，国内生产的聚丙烯多为Ziegler-Natta等规聚丙烯。

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silicon fume, quartz-sand and steel fiber in the raw materials of rpc are all expensive. and the most expensive material is steel fiber.

RPC的原材料中的硅灰、石英砂、钢纤维都是价格昂贵的材料，其中最贵的是钢纤维。

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it has became a very much concerned problem for every hospital to know how to prolong the service life-span of x-ray tube in ct machine, as its price is very high and its life-span is limited.

由于CT机X线管的价格昂贵，且使用寿命有限，因此如何延长X线管的使用年限就成为每个医疗单位非常关注的问题。

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testing and analyses of acoustic transducers in aluminum tube and pvc tube have proved that the newly developed radial polarized transmitting transducer can replace the former expensive tangential polarized one.

通过几种换能器在铝槽和PVC槽中进行的测试与分析，证明了新研制的、用于发射的径向极化换能器可以替代价格昂贵的大直径切向极化换能器。

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seller, a computer retailer, receives an order for a computer from buyer, a resident of state b.the order is for a powerful, expensive computer of the sort commonly bought for use in business firms.

出卖人是一个电脑零售商，接到一个住居在B国的买受人购买一部电脑的定单，该定单所购买的是一台通常用于商业公司的功能强大并且价格昂贵的电脑。

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the system puts forward similar pacs which avoids using the expensive ultrasonic working stations that some hospitals can not afford.

该系统主要针对目前超声工作站价格昂贵，一些基层医院不能购买的情况，提出类PACS的系统。

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owing to the expensive price of gemini surfactant, it is generally used together with traditional surfactant.

由于Gemini表面活性剂价格昂贵，一般是与传统的表面活性剂复配使用的。

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have you seen the new car our neighbor bought?

你有没有看到邻居买的新车？这是一辆Mercedes牌的车，肯定价格昂贵。

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though costly, polyvinylidene fluoride ( pvdf) has excellent thermal and chemical stability.

聚偏氟乙烯（PVDF）虽然价格昂贵，但热稳定性和化学稳定性很好。

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david mckenzie, cnn correspondent: for more than just the cost.

CNN特派员大卫·圭肯锡：不只是因为价格昂贵。

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the heteroepitaxy of the sic film is important since high quality sic wafer is expensive and hardly to be achieved.

由于制备SiC体单晶非常困难而且价格昂贵，因此SiC薄膜的异质外延生长是重要的。

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finally, in allusion to the complexity, slow-speed and high-cost of set protocol, the author proposes an architecture model of security control, and thoroughly analyzes its working principles and realization.

最后，针对SET协议使用复杂、速度慢、价格昂贵等不足，提出了安全控制分级模型，并对安全控制分级模型的工作原理和实现进行了分析研究。

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high-voltage amplifiers are expensive and need considerable space on the pcb ( printed-circuit board), however.

高压放大器价格昂贵，且需要PCB板上相当大的空间。

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using low illumination and high resolution ccd instead of expensive image intensifier can decrease the system's cost greatly.

采用低照度高分辨率CCD代替价格昂贵的像增强器大大降低了系统成本。

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we often fail to realize the disparities in personal characteristics.

我们常常没能意识到个性特点的差异。

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cameron, of course, directed titanic, the most profitable movie ever made.

当然，这回来者是卡梅隆，他曾执导《泰坦尼克号》&史上吸金能力最强的电影。

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qingzhao li is a female writer who have the powerful creative ability and the biggest artistic achievement in the chinese literary history.

李清照是中国文学史上创造力最强、艺术成就最高的女性作家。

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