造价

The 24 pieces of costly hexagonal reflection mirrors are the core components of the most powerful spectrum survey telescope, and each of them has a 1.1 meter diagonal conjugate and 25 mm thickness. It adopts the mirror face automatically splitting joint and transforming technology which is created by Chinese and unique in the world.

24块造价昂贵的六边形反射镜，每块对角径1.1米、厚25毫米的镜面，是世界上最强大光谱巡天望远镜的核心组件，采用的是中国人开创、全球独一无二的镜面自动拼接兼具变形高难度技术。

The effects to which stations attract passenger flow, trip time, cost, real estate along line, URT feeder other traffic, structure and configuration of city were analyzed. Based on the minimize trip time of passenger, the model of optimal average distance between URT's stations and the model of station's coverage and the model of station's cost and benefit were proposed.

分析车站分布对吸引客流、乘客出行时间、工程造价、运营及沿线土地开发、城市轨道交通与其它交通方式的衔接、城市空间结构和城镇体系布局的影响；建立了基于乘客出行时间最短的最优平均站距模型、车站选取的覆盖量模型与费用效益模型。

Replacement of final clarification by membrane separation-Results with plate and hollow fibber modules［A］.

但由于膜的造价较高，需要的曝气量较大，目前运行费用仍较高。

Between the upper and lower bounds on the region shows the traditional fram

上界和下界之间的区域显示的是传统梁柱框架的造价随高度而变化的情况。

The high efficiency transistor development causes the frequency changer the construction cost more and more to be also low, from the cost and the performance considered selects PLC to the frequency changer control realization frequency conversion velocity modulation.

大功率晶体管的开发使变频器的造价也越来越低，从成本和性能考虑选用PLC对变频器控制实现变频调速。

Using the time-gain compensation technique to compensate for ultrasonic wave's weaking when transmitting in the air,and reduce the fluctuation of echo signal.The peak time detecting circuit which is composed of full-wave rectification circuit and differential circuit can detect the reach time of echo signal accurately.

和其他方法相比，如激光测距、微波测距等，由于声波在空气中传播速度远远小于光线和无线电波的传播速度，对于时间测量精度的要求远小于激光测距、微波测距等系统，因而超声波测距系统电路易实现、结构简单和造价低，且超声波在传播过程中不受烟雾、空气能见度等因素的影响，在各种场合均得到广泛应用。

The functional relation formula between the system reliability and the investment costs is corrected, and then the significance of some unknown parameters is more explicit.

对系统可靠度与投资造价的函数关系式进行了分析和修正，从而更加明确有关待定参数的意义。

As a new type of retaining wall in highway engineering,gabion retaining wall is being utilized in more and more engineering projects because of its lower cost,good zoology,wide application scope,flexible distortion,etc.

石笼挡土墙作为一种新型的挡土结构，以其造价低、生态性好、适用范围广、柔性变形好等特点在越来越多的工程中得到了广泛应用。

Facilitates, the cost to be low practical: Draft fan's air feed source has the multiple options, may use to gasify the air bottle, may also set at the sufficient air pump with outside, even may with vehicles' air pump connection, the construction cost lower directly compared to other category draft fan.

方便实用、成本低：排烟机的供气源有多种选择，可以用充气气瓶，也可以用外置充气泵，甚至直接可以与车辆的气泵连接，造价比其他类别的排烟机都低。

Traditional straightness measurement, such as leveling rule, gradienter, reinforcing wire, even though simple in detecting apparatus and adopted widely, are of certain limitation, low accuracy, low efficiency, and cant guarantee the performance. On the other hand, some other measuring devices cannot be widely used because of value.

传统的直线度检测方法，如平尺法、水平仪、钢丝法等，虽然检测器具简单，实际中常被采用，但各自都存在一定的局限性，测量精度不高，效率低，性能无法保证；而有些仪器却造价过高不利于广泛应用。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。