达的例句大全

The degree of water deficit can reach 45%~ 50% of field capacity, which has no bad effect on crop yield and can increase crop water use efficiency obviously.

陕西长武和甘肃民勤小麦和棉花的试验结果表明，其水分亏缺程度可达到田间持水量的45%～50%，而对作物的产量没有不利影响，但可明显提高作物水分利用效率。

The year-round light utilization ratio of the model attained 0.54%, which lifts 184.2% more than that of single cropping of cotton.

平均年光能利用率达0.54%，比大田单作棉花光能利用率提高了184.2%；

Developing and rolling out new higher-yielding strains is much easier and quicker for annual crops like wheat than for perennials such as palm trees that take time to mature and will bear fruit for many years.

开发和种植新型高产品种对小麦这种一年生作物会有立竿见影的成效，而棕榈树这种多年生植物需要很长时间才能到达成熟期并且数年之内都可产出棕榈油。

Analysis of and research on methods of radar cross section computation

雷达散射截面计算方法分析与研究

Method of Laser Radar Cross Section Measuring with Atmosphere Condition Changing

大气条件变化时的激光雷达散射截面测量方法

Study on Prediction Techniques of Radar Cross Section of Complex Targets

复杂目标雷达截面计算方法研究

The Methods for theoretical Analysis of Radar Cross Section

雷达截面的理论分析方法

The weld repair technology was introduced for crosshead of driven end of Φ 400mm roll. The rolling amount can reach 3.6 × 10~ 4t after the roll repaired.

介绍了Φ400mm轧辊传动端十字头磨损后焊接修补的工艺，修复后轧辊的轧制量能达到36万t。

The unbiased Darlington transistor was utilized to avoid crossover distortion and to improve power output for homing transmitting system.

为了解决自导发射系统的交越失真及输出功率问题，采用无偏置型达林顿管替代；

Researchers at the Weizmann Institute of Sciences in Israel have calculated that by the end of the year, the world will have reached a crossover point where human-made stuff outweighs1 that of living things.

以色列魏茨曼科学研究所（Weizmann Institute of Sciences）的研究人员经计算得出，到今年年底，世界将到达一个转折点，即人造物体的总重量超过生物的总重量。

Preliminary study on protein differential expression of small bowel in BALB/ c mice induced by croton oil

巴豆提取物诱导小鼠小肠组织中蛋白质差异表达的初步研究

Based on a systematical discussion on the theoretical research methods of crowned design in roller bearing, several crowned types adopted in the engineering practice are introduced in this paper, and research direction in the future is illustrated based on the authors' experience.

在系统沦述滚动轴承滚子凸度设计研究方法的基础上，介绍了工程实际中采用过的几种滚子凸型，给出相应的母线方程和表面间隙表达式，并阐述了今后的研究方向。

In addition, the solid liquid interface shape was controlled by changing geometric parameters, such as quartz crucible, graphite support thickness and cooling radius.

同时通过改变石英坩埚、石墨托厚度，冷源半径等几何参数来达到控制固液界面形状的目的。

The results indicate that the maximum temperature of the molten alloys is not lower than 2500K, the copper of the crucible does not enter into the ingots of alloys, and the ingots are very homogeneous.

试验结果表明，熔料可达到的最高温度不低于2500K；坩埚的铜质对熔锭并无污染；

Based on the experience in melting optical glasses, how to increase the using period of platinum crucible is also discussed.

提出了铂金坩埚使用与维护的某些措施，以达到延长铂坩埚使用期的目的。

The icebreaker, which will be operated by a crew of 75, will have a cruising radius of 8000 nautical miles ( about 15000 km) and will carry a helicopter and submersibles.

这艘破冰船将会由75个船员来操作，巡航半径将达到8000海里（约15000公里），并将配备直升机和潜水器。

Methods Choose 12 patients whose deep bite of anterior teeth reaching ⅱ~ⅲ degree. Open up bite helped by maxilla plane plate before correcting, in correcting and after failing in opening up bite by Edgewise appliance.

方法选择12例前牙深覆牙合达Ⅱ～Ⅲ度的患者，分别在矫治前、矫治中及方丝弓矫治器打开咬牙合失败后，用上颌平面导板协助打开咬合。

In this experiment, the content of protein was assayed by biuret method and Kjeldahl determination.

采用凯氏定氮法和光谱法分析测定完达山奶粉系列中蛋白质的含量。

The untreated rats' mandibular molar area used as normal biting force model. The prepared tissue specimens were processed to study the change in histologic morphology with HE staining, and the expression of IL-1 β in PDLC and osteoblasts with immunohistochemistry ( IHC) technique.

用HE染色和免疫组化的方法，观察不同咬合力状态下牙周组织的形态学改变以及IL-1β在牙周膜成纤维细胞（PDLC）和牙槽骨成骨细胞中表达的动态变化。

With the action of some bivalent cation, high temperature shift catalyst has been prepared by mixture precipitation method using open-hearth dust as a raw material.

利用钢铁厂平炉尘制备中温变换催化剂，制备成本低，工艺简单，活性达到部颁标准，具有明显的经济效益。