查询词典 f test

The key of longwall mining along strike safely and efficiently is efficacious controlling of surrounding rock, and the difficult points of surrounding rock controlling are dynamic stability of system "R-S-F" has be made clear by the facts from site test, experimental study and theoretical analysis, and three patterns may cause system "R-S-F" destabilization, such as dislocation, consequentiality and retrogradation among R, S and F in the process of longwall face advancing is put forward in the paper .

大倾角煤层走向长壁工作面开采方法与装备研究由于其矿压显现和围岩破断活动的复杂性而进展缓慢，较少见到国外主要产煤国家此方面的专门文献，我国目前的研究、试验与使用水平处于国际该领域的前沿。

A steel plate having a tensile strength of at least about 930 MPa (135Ksi), a toughness as measured by Charpy V-notch impact test at least about 120 joules (88 ft-lb), and a microstructure comprising at least about 90 volume percent of a mixture of fine-grained lower bainite and fine-grained lath martensite, wherein at least about 2/3 of said mixture consists of fine-grained lower bainite transformed from unrecrystallized austenite having an average grain size of less than about 10 microns and comprising iron and specified weight percentages of the additives: carbon, silicon, manganese, copper, nickel, niobium, titanium, aluminum, calcium,rare earth metals, and magnesium, is prepared by heating a steel slab to a suitable temperature; reducing the slab to form plate in one or more hot rolling passes (10) in a first temperature range in which austenite recrystallizes; further reducing said plate in one or more hot rolling passes (10) in a second temperature range in which austenite does not recrystallize, quenching (12) said plate to a suitable quench stop temperature (16); and stopping said quenching and allowing said plate to air cool (18) to ambient temperature.

一种钢板，其抗拉强度至少约930MPa135ksi），在－40℃（－40°F）下，采用夏氏V型缺口冲击试验测定的韧性至少约120焦耳（88英尺－磅），并且其显微组织包含至少约90％体积的细晶粒的下贝氏体和细晶粒的板条马氏体的混合物，其中该混合物的至少约2／3由从平均粒径小于约10微米的未再结晶奥氏体转变而来的细晶粒的下贝氏体组成，而且，其中所述的钢板包含铁和特定重量百分比的添加元素：碳、硅、锰、铜、镍、铌、钛、铝、钙、稀土金属和镁，所述钢的制备过程为：将一钢板坯加热至一个适当的温度；在奥氏体可发生再结晶的第一个温度范围内，采用一个或多个热轧道次（10），将所述板坯轧制成板材；在奥氏体不发生再结晶的第二个温度范围，采用一个或多个热轧道次（10）进一步轧制所述板材；将所述板材淬火处理（12）至一个适当的淬火终止温度（16）；停止所述淬火处理并将所述板材空冷（18）至室温。

V any test specimen that, on final examination, shows evidence of charring other than discolouration, more than 100 mm in any direction apart from upwards from the nearest part of the original position of the source.

b。 a O% s* h4 '任何物料，在最终检查中，有足够的证据显示在任何方向上炭化长度非变色超过100毫米。3 w D0 f； u， e+ c天天外贸论坛是中国最好的外贸论坛之一

About FRP pipe Pressure Test, we hope Timas can cooperate with us, if it can't be backfilled on time, which will affect steam drum hoisting and plate girder entering plant.

关于 F.R.P 管道试压一事，望 Timas 积极配合，如不能及时回填，将会影响汽包，大板梁进厂。

The average of quality of life is 52.98 ± 11.87. The quality of life among Lizu elderly people is not enough high. There may be considered three reasons. Firstly, chronics are very popular in local area. The chronics greatly influence the health of Lizu elderly people and reduce their physiology functions. Secondly, education degree affects the health of Lizu elderly people. Most of Lizu elderly people are illiteracies (76.5%), and they lack the consciousness of self-health care. Thirdly, most of Lizu people have a big family. Children couldnt spend enough time to attend their parents. Local economic income is relatively low and lead to the low level quality of life. 3.13 main factors that may affect the quality of life were analyzed by analysis of variance and T-test.

考虑是该地区黎族老年人患有慢性病人数较多，慢性病患病率高，长期受疾病的侵扰，生理机能衰退，也可能是黎族老年人文盲率较高(76.5％)，文化程度较低，自我保健意识较弱，也可能是黎族同胞传统的大家庭结构，造成家庭人口数多，家庭经济负担重，子女照料老年人时间较少，导致黎族老年人生命质量不高。3、用t检验和F检验对可能影响黎族老年人生命质量的13个因素进行分析，这些因素包括性别、年龄、文化程度、婚姻状况、生活来源、经济状况、医疗费用负担形式、是否患有慢性病、家庭结构、吸烟、饮酒、居住环境、生活满意度。

It's an important game, just because we're scuffling a little bit, and they're playing well," said Mets third baseman David Wright."This is a good test for us to go in there and play well."

R0 j4 ^5 f 「这是一场重要的比赛，只因为我们有点在混乱中挣扎，而他们打得正好」，大都会三垒手莱特David Wright说，「进到球场里把球打好，这对我们而言是一个好的考验。

I bet USA will not respond to this missile defense test because China simply will tell White House to shut up..., _ j5 J.

我打赌美国不会对这次蛋蛋防御测试做出回应，因为中国只会叫白宫闭嘴……4 V4 ~： J3 F； b8 Q

O f course it's not love but I'm not choosey. I just want to kiss you in new places, to savor the joy of living liking you.《the joy of living

现在我已经过了20岁了，进入了另一个世界，一切就像the flaming lips在《fight test》中唱到的那样

Iiiany composite that smoulders until it is essentially consumed within the test duration relevant to the source.

l0 k！ y3 ？ F V5 p： v天天外贸论坛是中国最好的外贸论坛之一任何物料在整个测试过程中闷烧至基本烧光。

The 0.1 Hz VLF method, CDA, OWTS and frequency tuned resonance test system, which have been developed in recent years, are discussed.

文中讨论了近几年以来开发的 0 。1Hz VL F法、CDA法、OWTS法以及变频谐振试验系统。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。