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Although the engine has a high energy conversion efficiency, it unfortunately has low specific power in that it is quite large for the power produced and this limits its range of uses to low power applications.

虽然发动机具有较高的能量转换效率，但不幸在该特定低功率是相当大的权力，这限制了其生产的各种用途，以低功率应用。

Other features include birth weight, growth and growth retardation, mental retardation, small head, round face, low ears, eyes from too broad, muscle tight low-end, on epicanthus, palm, and so on.

其它特点还包括出生时体重轻、生长及发育迟缓、智能不足、小头、圆脸、低位耳、眼距过宽、肌肉紧结性低、上眦赘皮、断掌等。

Methods 80 cases over 76 years old with dated epigastrium surgical operation,were enrolled in this randomized and enlarged control trial,and were divided into 3 groups,A,B and C:A,15 cases enrolled,with continuous epidural block group;B,25 cases enrolled,with combination general anaesthesia of intravenous and inhalation;C,40 patients enrolled,with low-dose and low-concentration epidural anesthesia com...

方法采用随机加大对照方法，选择80例76岁以上择期手术患者分为3组：A组15例为连续硬膜外阻滞麻醉组；B组25例为静吸复合全身麻醉组；C组40例为小剂量低浓度硬膜外阻滞复合静吸全身麻醉组。

Primitive pathology is diagnosed include to be not epithelioma of road of make water of shape of tit of wellability low level (epithelioma of road of make water of shape of tit of high level of N=23), blame wellability (N=6), low the way of tit shape make water that spends malign potential is epithelial tumor (tumour of shape of N=5), tit (N=3),...

原始病理诊断包括非浸润性低级别乳头状尿路上皮癌(n=23)、非浸润性高级别乳头状尿路上皮癌(n=6)、低度恶性潜能的乳头状尿路上皮肿瘤(n=5)、乳头状瘤(n=3)、尿路上皮肿瘤(n=2)、原位癌(n=1)以及鳞形细胞癌n。。。

My company professional develop natal LED series illumination product adopt high-test LED chip and pc kuan timber, Resistance to impact, resist ageing, prevent ultraviolet, age long, conserve energy, color and lustre beautiful, performance equability, low loss, low maintain, is new generation green the illumination of environmen tal protection product.

我公司专业研发生产的LED系列灯饰产品采用优质的LED芯片及PC管材，抗冲击、抗老化、防紫外线、寿命长、节能、色泽鲜艳、性能稳定、低损耗、低维护，是新一代绿色环保的灯饰产品。

In obtains domestically produced LHRH-a to unite the low dosage alkyne promise alkone to be possible effectively to treat different sickness, and can reduce the low estrin symptom, reduces the hemorrhage rate, slows down the bone to transform.

得出国产LHRH-a联合低剂量炔诺酮可有效治疗内异症，并能减轻低雌激素症状，降低出血率，减缓骨转换。

They cationic monomer Acryloyloxyethyl ethyl trimethyl ammonium chloride and resource-rich, low price, low values of weathering burning coal as its main raw material, aqueous dispersion polymerization methods, through the weathered coal / cationic monomer in-situ polymerization in the international arena for the first time prepared by a high efficiency oil-bearing wastewater treatment agent; use of oil-field wastewater treatment, the waste slurry as raw material, has developed the world's first CWS dispersants and oil fields of the "three mining" using profile control plugging agent, in order to The high value of solid waste has opened up new avenues of applications; integration of related technologies, and open up for the oil field wastewater treatment, an annual output of 300 tons of sets of processes and devices for the first time realized the slop oil and drilling fluid back row of the industrialization of treatment .

他们以阳离子单体丙烯酰氧乙基三甲基氯化铵与资源丰富、价格低廉、燃烧值低的风化煤为主要原料，采用水介质分散聚合方法，通过风化煤/阳离子单体原位聚合技术，在国际上首次制备出高效含油废水处理剂；采用油田废水处理后的废弃物泥浆为原料，在国际上率先开发出水煤浆分散剂和油田"三采"用调剖堵水剂，为固体废弃物的高值化应用开辟了新途径；集成相关技术，开拓出针对油田废水处理、年产300吨的成套工艺和装置，首次实现了油田污油水和钻井返排液的工业化处理。

The principal mass-independent cause for variation in the basal rate of eutherian mammals is that high rates of energy expenditure, when ecologically feasible, facilitate high reproductive outputs, whereas some habits and environments require low energy expenditures, which lead to low rates of reproduction.

除体重因素外，导致真兽类基础代谢率变异的主要原因是：当生态因素适合时，高水平的能量消耗可以促进动物的高繁殖输出，而动物的某些习性和生存环境则会要求低能量消耗，从而使繁殖率降低。

In view of situation that existing controller and networking communication of low-voltage breaker adopt user-defined protocol, which has shortcomings of poor reliability and exchangeability in communication, the paper introduced a design scheme of a new type of intelligent controller for low-voltage breaker based on DeviceNet protocol and introduced its design of hardware and software in details.

针对现有低压断路器控制器与控制网络通信因采用自定义协议而存在通信可靠性低和互换性差的缺点，介绍了一种基于DeviceNet协议的新型低压断路器智能控制器的设计方案，详细介绍了控制器软、硬件设计。

In order to improve the reliability of the nuclear Generating Sets and the stabilization of the power system, prevent the long time low frequency oscillation caused by the disturbed of the outside electrical net, assured improving the stabilization margin of the nuclear generating sets in the precondition of enough transient stability, validate the sensitivity of the parameter to the damping of Generating Sets of the MEC5220 digital excitation adjustor produce in Japan that used in the Second Project of Qinshan Nuclear Power Plant, confirm the parameter rationality of the digital excitation adjustor, optimize the parameter of PSS, in this paper, we put up a in-depth study to the principle of MEC5220 digital adjustor produce in Japan by the PSS/E software that develop by the PTI Company in the USA, completed the modeling of the excitation adjustor, PSS, generator, excitor, described the performance of this excitation adjustor, analyzed the essential reason that caused the low frequency oscillation, illuminated the factor that influence the damping characteristic of the MEC5220 digital excitation adjustor. Based on model and emulate, this paper optimized the primary parameter of the excitation adjustor, make a reasonable regulation to the PSS parameter.

为提高核电机组的运行可靠性和接入系统的安全稳定性，防止在外电网的干扰下核电机组发生长时间的低频振荡，保证机组在暂态稳定的前提下提高其稳定裕度，验证秦山核电二期核电机组所配日产MEC5220型数字式励磁调节器参数对机组阻尼的灵敏性，确定数字式励磁调节器的参数的合理性，优化PSS整定参数，本文利用美国PTI公司研发的PSS／E软件对日产MEC5220型数字调节器的原理进行进行了深入细化的研究，完成了励磁调节器、PSS、发电机、励磁机的建模，描述了该型励磁调节器的性能，分析了产生低频振荡的根本原因，阐明了影响阻尼特性的因素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。