查询词典 M-roof

M/M/2 queueing system with absorbing state have been widely used in many fields such as transportation and service profession.

带吸收状态的M/M/2排队系统在交通，服务行业等领域中有广泛应用。

Let m be a finite μ-invariant measure of Q-matrix, as Q is totally stable, consists of a single absorbing state or single-instantaneous state, we prove that exists Q-processes P , in which m be a μ-invariant measure of P , and construct the Q-processes P .

第四章致力于μ不变测度的研究，设m是Q的有限μ不变测度，在Q是全稳定、单瞬时不可和准保守拟Q-矩阵，以及含有吸收态的情形，分别证明了存在Q过程P，使m是P的μ不变测度，并且都具体构造出Q过程。

After acidify with hydrochloric acid, the plasma was extracted with ethyl ether and then analyzed by Hypersil ODS2 (250×4.6 mm,5 μm) column with the mobile phase of methanol-water-triethylamine-acetic acid(2500∶1500∶15∶7), and at the detection wavelength of 355 nm.

血样经盐酸酸化后以乙醚提取，进行 HPL C分析，色谱柱为 Hypersil ODS2 (2 5 0× 4.6 m m，5 μm)，流动相为甲醇-水-三乙胺-冰醋酸(2 5 0 0∶15 0 0∶ 15∶ 7)检测波长为 35 5 nm，尼美舒利为内标。

A new concept of the X-M-PN space is introduced, and the acute angle principle in the X-M-PN space is proved.

提出了X-M-PN空间的新概念，在X-M-PN空间中证明了锐角原理，同时得到了若干新的结果。

Finally, a hospital viscosity of plasma diagnostic system is optimized by adjoint matrix method and M-P generalized inverse matrix method of MTS. The results show that adjoint matrix method can't select effective variables and M-P generalized inverse matrix method is robust.

最后，利用马氏田口伴随矩阵法和M-P广义逆矩阵法对某医院现阶段血粘度诊断系统进行优化，说明伴随矩阵法在选择有效变量时存在的问题和M-P广义逆矩阵法的稳健性。

M porous structure confirms transmission of body fluid of human body and ingrowths of mineral and fiber tissue, then made it firmer combine with around tissue of human body and the commutative pores was favourable for affusion of bioactive HA.

本实验采用东北大学陶瓷研究所研制成功的由Ti粉和Ni粉为主要原料，采用TiH_2和NH_4HCO_3作为造孔剂，通过粉末冶金方法制备的多孔NiTi合金，并采用真空灌注羟基磷灰石的方法取得的种植体的新材料，在添加TiH_2做为造孔剂的基础上在Ti：Ni原子比为50%：50%的试样中添加NH_4HCO_3做为第二种造孔剂后，试样中的气孔经检测是由100～500μm的大孔、1～50μm小孔和1μm以下的微孔组成，产生了合理的粗化表面并同时得到了固位良好的生物涂层。

A boot-type jet trenching system is adopted which is towed by the supporting ship. It is mainly used for trenching hard sandy clay at the shoal area with water depth 0.8 m to 30 m. Diameter of the cable to be buried is up to 150 mm, and the burying depth more than 2 m. This system has advantages of simple structure, high burying speed and great trenching depth.

该系统采取滑靴型式的喷冲挖沟方式，埋缆机由母船拖曳前进，主要用于水深在0.8～30 m的滩海，底质为硬砂土和红胶泥层，埋设直径小于150 mm的电缆，埋设深度大于等于2 m。

It was shown that coal seam floor failure depth of working face 2121 was 32.5 to 5 m, approximately three times as deep as that of shallow working face(in genera l,9.15 to 12.0 m). Coal seam floor failure depth increased with mining depth. Potential risk of water inrush through coal seam floor of working face 2121 is much higher for deep mining than for shallow mining.

试验结果表明：该工作面底板破坏深度为32.5~35 m，比300 m采深以内的工作面实测深度(9.15~ 12.0 m)增加2倍以上，说明随着开采深度的增加，煤层底板采动破坏深度呈明显增大的趋势，因此，在水压和破坏深度二者同时增加的条件下，2121工作面深部煤层开采的突水危险性远远大于浅部煤层。

In third part, I discussed R0 algebra in two different aspect:(1) Defined Boole element in R0 algebra. Gave the properties of Boole element and distributive rules of Boole element about finite R0 algebra. Study the filter and the stone filter of L are filters of M.

元的分布规律：研究了民代数M的滤子和民代数M作为有界分配格（记这个有界分配格为L（MO 的滤子之间的关系，得出结论：L的极小素滤子以及 L的 Stone滤子都是 M的滤子，但 L的滤子一般不必是M的滤子。

The analysis shows that the outburst was between 15~h20~m-16~h40~m, on 12 August 1991,tha...

分析表明：大爆发出现在1991年8月12日15~h20~m至16~h40~m，即λ_☉(2000.0)=139°。54-139°。60之间，大爆发峰值处在12日15~h58~m，或λ_☉(2000.0)=139°。57。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。