نتایج جستجو برای: three rake angle of 30

تعداد نتایج: 21282643  

Journal: :Forests 2022

Walnut (Juglans regia L.) is widely used in wood furnishings, and machinability a key factor for improving product quality enterprise benefits. This work focused on the influence of rake angle, depth cut, cutting speed force machined surface roughness during straight-tooth milling walnut. On basis experimental findings, mathematical model was created using response methodology to determine rela...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1390

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1392

abstract reception environment has considerable effects on accepting a translation. as the expectations of a target culture and its values and needs change throughout history, its criteria for accepting a translation or rejecting it will change accordingly (gentzler, 2001). the expectations of iran, as the reception environment in the present study, have changed after the islamic revolution. i...

Journal: :Crystals 2023

The cutting process generates specific mechanical characteristics in the subsurface layers of shaped parts. These have a decisive influence on working properties and product durability these orthogonal structural heat-treated steel’s effect machined was evaluated by instrumented nanoindentation method sclerometry (scratch) method. As result this study, relationship between work tertiary zone to...

Journal: :Forests 2023

Beech wood is a material commonly used for furniture, and cutting performance the key to improving product quality enterprise benefits. In this work, beech milling experiments using diamond cutters were carried out, changes in power, temperature, surface roughness examined factor analysis method. The main results of work are listed as follows: Firstly, higher speed depth led roughness. Meanwhil...

Journal: : 2021

The efficiency of drill string largely depends on the pipe-end connector’s accuracy named tapered thread tool joint. Most those are made by using lathes. Turning tools were with a profile identical to profile, and all well-known world brands’ plants make back rake angle such cutter zero value. This is obviously due lack precise algorithm for calculating ensuring profile. A virtual experiment wa...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1391

the present study aimed at exploring cognitions of iranian english teachers within the context of english for academic purposes (eap). to this end, the cognitions of two groups of eap teachers with respect to their pedagogical content knowledge (pck) and their sense of professional identity (pi) were probed. two language teachers and two content instructors who had at least five years of eap te...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1391

the present study aimed to investigate representation of discourse markers and metadiscourse markers in conversations and readings of general elt coursebook series used in the language centers of iran. to this aim, four elt coursebooks popularly taught in language centers of this country were analyzed based on fung and carter’s (2007) framework regarding discourse markers and hyland’s (2005) fr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1391

‘romanticism’ and ‘romantic’ are among the most controversial terms in literature. most readers, when encountering these words, would think of the well-known period of romanticism of the first three decades of the nineteenth century and the great six english poets known as ‘the big six’ of this period. however, romanticism does not belong to certain artists in a special period; one may seek ele...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1382

‏‎translation as a comunicative process is always said to be associated with various aspects of meaning loss or gain. subtitling as a mode of translating, due to special discoursal and textual conditions imposed upon it, is believed to be an obvious case of this loss or gain. presenting the spoken sound track of a film in writing and synchronizing the perception of this text by the viewers with...

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