four fractures 中文意思是什麼
four fractures
解釋
四骨折-
Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation
為解釋微合金化50crv鋼強韌化機理，本文通過對不同淬火溫度，回火溫度，回火時間下的力學性能指標的對比及顯微分析，認為微合金元素的細化晶粒，馬氏體的回火分解，殘余奧氏體的轉變，第二相的沉澱析出共同決定了微合金鋼的強韌化情況，特別是由於微合金元素的存在，其細化晶粒及其碳氮化物的沉澱析出，導致鋼的良好的強韌性，並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應，會在硬度曲線中產生明顯的二次硬化現象。 -
Results : seventy - four ( 51 % ) of the fractures were treated with external fixation and percutaneous pin fixation, and seventy were treated with dorsal, volar, or combined plate fixation
結果： 74處（ 51 % ）骨折採用經皮穿針外固定術，其餘70處採用背側、掌側或雙側鋼板內固定術。 -
The discourse discusses structure pattern, rupture - distributing law and ore - controlling action about mouru ore belt. grasping distribution rule of the fractures in ore - forming zone by remote sensing analyse and field survey, and made a research about the ruptures " ore - containing character in the different orientation, putting forward that four ne - orientation structure containing - ore zone alternate with strong and feebleness
論文詳細地論述了牟乳含礦帶的構造格局、斷裂分佈規律及控礦作用，通過遙感構造解譯和實地考察，從宏觀上整體把握了區域上和成礦帶內斷裂的分佈規律，對不同方向上斷裂的含礦性做了研究，並提出了牟乳礦帶內北東向的四個強弱構造含礦帶。 -
Two methods " principle of three dimensional stress determination developed from the above four basic ones by yangtze river scientific research institute are presented, one based on hydraulic fracturing and hydraulic tests on preexistent fractures in single borehole, another one based on ckx - 97 hollow package 3 direction strain gauge
並對長江科學院完善的單鉆孔中水壓致裂法三維地應力測量和ckx - 97型空心包體式鉆孔三向應變計的三維地應力測量的計算公式作了推導。 -
Methods a retrospective analysis of 184 elderly cases of femoral trochanteric fractures in four different operative ways was conducted
方法對184例老年股骨粗隆部骨折採用4種不同手術方式，對其療效進行分析討論。 -
Research shows that four factors have great influence on the formation of complex rock mass. first, rock mass subjected six times of tectonic movement during long period of geo - history, each tectonic movement produced fractures and associated joints corresponding to the orientation of maximum principal stress and deteriorated the properties of fractures formed at former period ( s ). second, down - cutting of langcangjiang river produced unloading fractures
採用了四種巖體質量分級評價方案對研究區巖體質量進行了研究，這四種方案包括：工程巖體分級標準（ gb50218 - 94 ） 、水利水電圍巖工程地質分類（ gb50267 ? 99 ） 、巖體rmr分類（ bieniawski ， 1973 ） 、巖體質量指數z分級（小灣， 1995 ） 。
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