查询词典 B.P.

It was found for the first time in b-FeSi2 based thermoelectric materials that a p-type semiconductor could change to an apparent n-type one, when the temperature was decreased below a critical temperature.

本项目研究首次在b-FeSi2基热电材料中发现"热伏极性"反转现象，即p-型半导体在某个临界温度以下表现为明显的n-型半导体热电特性。

The author unites PC, traditional ultrasonic－ testing device, high－ speed data acquisition card and software together as a system. This system can finish A,B,C and P scanning, determine velocity in the tested material ,measure the height, show the defect pictures inside and recognize the defect, etc. The digitization, picturization, intelligence and automation of the testing are realized.

该卡与传统超声探伤仪， PC586计算机以及高级编程软件可非常方便的构成智能化超声检测系统，具有 A、 B、 C、 P扫描、声速测定、厚度测量、图象显示以及缺陷识别等功能，实现了超声检测的数字化、图象化、智能化、自动化。

Accuracy between two groups was calculated byχ~2 test.Calculate the average effective radiation dose of the 30 patients.Results In group A,seventeen patients underwent both DSCT coronary angiography and SCAG,among 255 segments of 17 patients,105 lesion sites of 70 segments were diagnosed stenosis or obstruction,of them,95 lesion sites were confirmed by SCAG.The accuracy of DSCTCA was 90.48%.The agreement of two methods have a high agreement(Kappa =0.853).In group B,13 patients underwent both DSCT coronary angiography and SCAG,among 195 segments of 13 patients,73 lesion sites of 57 segments were diagnosed stenosis or obstruction, of them,65 lesion sites were confirmed by SCAG.The accuracy of DSCTCA was 89.04%.The agreement of two methods have a high agreement(Kappa =0.835). There was no significant difference(χ~2=0.098,p＞0.05) between the accuracy of two groups.The effective radiation dose of 30 patients was 3.67±0.43 mSv.Conclusion Compared with SCAG,prospectively ECG-gated transverse DSCT is a valuable examination to detect and diagnose coronary artery disease with a low dose coronary angiography.The accuracy of the DSCT is approximate to the SCAG.There was no significant difference between the accuracy of two groups.

结果200例患者均成功完成了适应性前瞻性心电门控双源CT冠状动脉血管成像；30例同期行SCAG检查的患者，A组17例：HR≤75 bpm，可评价冠状动脉节段255个，70个冠状动脉节段有105处不同程度的狭窄，95处狭窄程度与金标准SCAG相符，其阳性诊断准确率为90.48%；2种方法的诊断结果得到了较高的一致性(Kappa值=0.853)。B组13例；HR≥91 bpm，可评价冠状动脉节段195个，57个冠状动脉节段有73处不同程度的狭窄，65处狭窄程度与SCAG相符，其阳性诊断准确率为89.04%；2种方法的诊断结果得到了较高的一致性(Kappa值=0.835)。2个心率组间的诊断准确率无明显统计学差异(x~2=0.098，p＞0.05)。30例患者的平均有效辐射剂量为3.67±0.43 mSv结论适应性前瞻性心电门控双源CT冠状动脉成像是一种有效减低辐射剂量的扫描方式，其诊断准确率与金标准SCAG相比得到较高的一致性，且高、低2个心率组间诊断准确率无明显统计学差异。

Coifman etc proved that the commutator T_f = f = T -bT is bounded on Lp if and only if b BMO, where T is a classical singular integral operator.

Coifman等人得到了交换子T_bf=f=T-bT在L~p(1＜p＜∞)上有界当且仅当b∈BMO，其中T是经典的奇异积分算子。C。

Transport time: 30 days Price: US Dollars 4 800 per MT P B: 2 % after receipt of Buyer BG Contract Duration: 12 months Delivery: CIF ASWP Soft and Main Ports Currency of payment: UNITED STATES DOLLARS Documents Seller must provide: Commercial Invoices.

运输系统时间： 30 天价格：美国元 4800 每一机械翻译 P B： 2%在收到买主 BG 之后契约期间： 12个月递送： CIF ASWP 软的和主要部份港口付款的通货：美国 DOLLARS ？文件卖方一定提供：？

In section 1.3, taking the advantage of the classification by the index arrays ,pointed out the space spanned by class A,B,C respect!vivety are subalgebras of NQ. We also show that the subspace spanned by the elements of length 2 in C is an abelian subalgebras of NQ,denoted by H.we find H is contained in the center of subalgebra P of the subspace spanned by the elements in class C.

在1.3节中，应用指标数组我们讨论了各类元素的性质，指出其第A，B，C类元各自张成的子空间均是N_Q的子代数，特别是C类中所有长度为2的元素张成了N_Q的Abel子代数H，且含于C生成的子代数P的中心Z中。

The crystal belongs to triclinic, space group P-1 with α=0.775 1(2) nm, b=0.837 7(2) nm, c=1.003 7(2) nm,α=75.57(3),β=83.05(3),γ=86.08(3), D=1.296 g/cm^3, Z=2, F(000)=256,μ=0.095 mm^(-1), and the final deviation factor R=0.0545 and wR=0.146 0. X-ray analysis reveals that molecules are linked by intermolecular O-H…O hydrogen bonds formed between the adjacent molecules.

具体测定结果如下：该晶体属于三料晶系，P-1空间群，α=0.7751 (2) nm， b=0.8377 (2) nm， c=1.0037 (2) nm，α=75.57 (3)，β=83.05 (3)，γ=86.08 (3)， D=1.296 g/立方公分，Z=2， F(000)=256，μ=0.095 mm^(-1)，最终偏差因子分别为R=0.0545，wR=0.1460.X-射线衍射分析表明，分子之间通过相邻分子间形成的O-H…O氢键相连。

It belongs to triclinic system with space group P-1, a=0.7382(1) nm, b=0.9992(2) nm, c=1.1535(2) nm,α=81.41(2)°,β=85.72(2)°,γ=72.21(2)°, D=1.404 gcm^(-3), V=0.8007(38) nm^(-3), Z=2. The crystal structure shows that the compound has trans configuration and characteristic dimers connected by intermolecular hydrogen bond.

结果表明，该晶体属三斜晶系，空间群P-1，V=0.80070(38) nm^3，Z=2，D=1.404gcm^(-3)，a=0.7382 (1) nm，b=0.9992 (2) nm，c=1.1535 (2) nm，α=81.41 (2)°，β=85.72(2)°，γ＝72.21(2)°，分子结构呈反式构型，通过分子间氢键组装成二聚体。

Ill omens; ill predictions; my words with inauspicious thunderings shook heaven- P.B.Shelley;a dead and ominous silence prevailed; a by-election at a time highly unpropitious for the Government.

凶兆；不吉利的预言；我那带着不幸的、雷鸣般的话语摇撼了天堂——p·b·雪莱；一种死气沉沉的、不吉利的静寂四下里传开了；在极不利于政府的时候举行的递补选举。

B. Each kind of nucleic acid is composed of three parts: Molecular azotic basic group + member pentose + molecular phosphoric acid radical, DNA is by C, H, O, N, the P five kind of elemental compositions. c. The nucleic acid azotic basic group may divide into four kinds: Guanine, thymine, adenine, cytosine d.

b。 每一种核酸由三个部分所组成：一分子含氮碱基+一分子五碳糖+一分子磷酸根，DNA都是由C、H、O、N、P五种元素组成的。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。