查询词典 D.A.

The matching device automatic test-board is the checking tool checked the matching device capability, precision and reliability are the technique of the the matching device, the precision is the precondition of checking the matching device, the reliability is credibility degree of the decision checking consequent.the topic in view of the existing technique level, the main factors, which influence the measurement precision of the large scale test system, are analyzed in this paper, and the solutions improving the precision are put forward.1 using the multi-channel independent ac to transfer dc module, the power supply of the digit part and the simulation part is discerption, reducing the crosstalk between the digital signal and the simulated signal;2the feedback self-checking module is constructed by singlechip compositive 16 high accuracy a/d , established a closed-loop control system through this module and improved system's overall precision effectively.

匹配装置自动测试台是检测匹配装置性能的检测工具，其重要的技术指标是精度与可靠性，其高精度是作为检测匹配装置的前提，可靠性是决定了检测结果的可靠度。本课题针对现有的技术水平，分析了影响大型检测系统测量精度的主要因素，提出了提高精度的具体方案和办法：1采用了多路独立交流转直流模块，数字部分与模拟部分分开供电，减小了数字信号与模拟信号之间的串扰。2利用单片机集成的16位高精度a/d构建了反馈自检模块，通过该模块建立了一个闭环控制系统，有效地改善了系统的整体精度。

Plasticizer: According to the ASTM-D-883 definition, a plasticizer is a material incorporated in a plastic to increase its workability and flexibility or distensibility.

增塑剂：按照美国试验材料协会的定义(ASTM-D-883)，增塑剂是一种可增加塑料的可加工性、延展性及膨胀性的物质。

D and Betty live in a small town about 25 miles outside a major metropolitan area, where they own a large wholesale distributorship .

D和贝蒂住在一个小城镇的约25英里外的一个主要大都市地区，他们拥有一个大型批发分销。

By using division with remainder, an approach to compute the C-D pair is given for a given operator A such that AC=BD, which can be applied to solve operator equations.

利用带余除法对于给定的算子A给出了求其C-D对的算法，使得AC=BD。

A general appraisal is given to the modern Type D double-ended and Type A single-ended transmisison line fault location principles based on travelling waves in accuracy and reliability.

对现代D型双端和A型单端输电线路行波故障测距原理的准确性和可靠性进行了综合评价。

When you can score at will, and Kobe can, it's hard to condition yourself to dish it off to a young guy who might A drop the pass, B knock the ball off his kneecap, C take an ugly, off-balance shot, or D all of the above.

当你可以随心所欲的得分，就像kobe，控制你自己的表演去把球交到同伴手中是很困难的。因为那个家伙可能A）被断球B）把球打到自己脚上C）作一个糟糕的，并且失去平衡的投篮D）以上全部。

A dunce cap is a tall conical hat typically made of paper and often marked with a D.

典型的愚人帽是一个高高的圆锥形纸帽，上面通常标有一个字母"D"。

A novel edge-triggered D-flip-flop based on a resonant tunneling diode is proposed and used to construct a binary frequency divider.

提出了一种基于共振隧穿二极管的新型边沿触发D触发器并将之用于构成二进制分频器。

It wasn't until the Edict of Milan in A.D. 313 that Christianity became a legal religion.

直至A.D.313在米兰的宣告，基督教才被确认为合法的宗教。

Overall, implantations by a nonelectrophysiologist were associated with a higher risk of procedural complications and lower likelihood of receiving a CRT-D device when indicated compared with patients whose ICD was implanted by an electrophysiologist.

"鉴于CRT对病患的存活率和生活质量上所存在的大量裨益，不植入CRT-D装置的决定对患者的治疗来说有着非常重要的含义"

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。