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The Internet also known as the Net is the world's largest computer network . “ And what is a network”? You may ask. A computer network is basically a bunch of computers booked together somehow. In concept, it's sort of like a radio or TV network that connect a bunch of radio or TV stations. ..
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摘要 在數(shù)控機(jī)床中刀具探測(cè)器是非常重要的。在現(xiàn)代工業(yè)中探測(cè)器的應(yīng)用及缺 點(diǎn)。按照起初的想法，在切削刃的四個(gè)方向： + X，-X， + Z和-Z定向刀具磨損的直接測(cè)量中全部使用應(yīng)變橋。關(guān)鍵詞：探針，應(yīng)變式傳感器，刀具磨損的測(cè)量，直接測(cè)量刀具磨損。1引言 各領(lǐng)域制造技術(shù)的快速發(fā)展，以降低成本，提高精度和縮短生產(chǎn)..
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Abstract - The test of low-voltage switchgear (contactor,relay, breaker etc.) includes electric longevity and electriccharacters of turn on-off. The fast calculation and analysis methods for electric parameters were investigated. Muchattention has been paid to the effect of performance in lowvolt..
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關(guān)于資本成本、資本預(yù)算和資本結(jié)構(gòu)問(wèn)題，我們調(diào)查了392位首席財(cái)務(wù)官。大的公司主要依靠現(xiàn)值技術(shù)和資本資產(chǎn)定價(jià)模型，而小公司相對(duì)地比較喜歡使用回收期標(biāo)準(zhǔn)。當(dāng)發(fā)行債務(wù)時(shí)，公司比較注重維護(hù)財(cái)務(wù)彈性和比較好的信用等級(jí)；當(dāng)發(fā)行股票時(shí)，比較注重每股收益稀釋和近期股票價(jià)格升值情況。我們發(fā)現(xiàn)了對(duì)于支持優(yōu)序融資假說(shuō)和交..
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適當(dāng)有效的建筑材料是限制富有經(jīng)驗(yàn)的結(jié)構(gòu)工程師成就的主要原因之一。早期的建筑者幾乎都只使用木材，石頭，磚塊和混凝土。 盡管鑄鐵在修建埃及的金字塔中已被人們使用, 但是把它作為建筑材料卻由于大量熔煉它比較困難而被限制。 藉由產(chǎn)業(yè)革命，然而，受到把鑄鐵作為建筑材料和在大量融煉它的能力的兩者對(duì)其雙重需要的影..
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ABSTRACT: the limit-equilibrium method is commonly, used for slope stability analysis. However, it is well known that the solution obtained from the limit-equilibrium method is not rigorous, because neither static nor kinematic admissibility conditions are satisfied. Limit analysis takes advant..
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自由曲面光學(xué)元件具有許多優(yōu)異的光學(xué)性能，越來(lái)越多地應(yīng)用到現(xiàn)代光學(xué)系統(tǒng)設(shè)計(jì)中。而自由曲面光學(xué)元件制造的復(fù)雜性和不確定性是制約其應(yīng)用的瓶頸之一。慢刀伺服單點(diǎn)金剛石車(chē)削是一種可以加工很高精度自由曲面光學(xué)表面或非回轉(zhuǎn)對(duì)稱光學(xué)曲面的新技術(shù)。機(jī)床伺服執(zhí)行能力是自由曲面能否加工的基本條件。金剛石刀具幾何參數(shù)的..
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Computer Program, set of instructions that directs a computer to perform some processing function or combination of functions. For the instructions to be carried out, a computer must execute a program, that is, the computer reads the program, and then follow the steps encoded in the program in a ..
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Abstract ：The basis of the design of earth and rockfill dams is focused on ensuring the stability of the structure under a set of conditions expected to occur during its life. Combined mechanical and hydraulic conditions must be considered since pore pressures develop during construction, after..
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