單字n-的中文意思與發音


n-


    egative







單字n-的中英文例句與用法


從有毒植物小花棘豆中分離並鑒定了8個生物鹼成分,臭豆堿、華堿、-甲基野靛堿、爪豆堿、靛葉堿、嘌呤、蘚堿和脲基甲酸乙酯。
Eight alkaloids were isolated from oxytropis glabra and identified as anagirine thermopsine n-methylcytisine sparteine haptifoline adenine dictamnine and ethyl allophanate respectively by spectral analysis and physicochemical methods.
鋼球磨損表面形成了由feso4、fes、b2o3、n-b-o及o-fe-b等多組分構成的保護膜,從而使得摩擦學性能得以改善。
The complex protecting film composed of feso4 fes b2o3 n-b-o and o-fe-b contributed to improve the tribological behavior of the lubricant.
分子?對ch_3oh-h_2o和n-c_3h_7oh-h_2o系?中水的吸附
The adsorption of water in the systems ch_3oh-h_2o and n-c_3h_7oh-h_2o wifh molecular sieve.
該產品可為全n通道功率mosfet三相橋的直接大電流門極驅動提供輸出,最大電源電壓為38v。
It is designed with outputs for a direct high current gate drive of an all n-channel power mosfet three phase bridge with a maximum supply voltage of38v.
該器件由一n溝耗盡型mos管、一橫向pnp雙極電晶體和一個電阻集成而得。它具有“雙負阻”特性和正阻區阻值易於控制等特點。
This device consists of a n-channel depletion mode mos transistor a lateral pnp bipolar transistor and a resistor and has the behavior of "dual negative resistance" characteristics and easily controlled resistance in positive resistance region.
經紅外光譜分析表明,樹脂吸附法優於飽和正丁醇萃取法,用分光光度法測定了皂甙含量。
According to the result of infra-red spectrophotometric analysis the method of resin absorption is better than n-butanolextraction.
紐約探訪護士華埠社區服務中心在中華公所大禮堂舉行新春聯歡會,並在會上頒發感謝狀給即將卸任的伍銳賢主席。
The visiting nurse services of new york chinatown n-norc service hosted their annual lunar new year party at the ccba auditorium and presented an appreciation award to president eric ng.
全國有色人種協進會希望人們不再使用帶有種族歧視的語言。
The naacp is hoping to finally lay the n-word to rest.
文摘:研究了在其它工藝條件不變的情況下,改變光氣與甲胺的配比對合成n-甲氨基甲醯氯的影響。光氣∶甲胺(摩爾比)由1。35∶1降至1。25∶1,最終產物甲基異氰酸酯收率由81。89%升高至86。23%。
Abstract: study on the synthesis of n-methyl carbamyl chloride underdifferent ratio of input materials and the yield of the termination products methyl isocyanate.the yield is raised from81.89% to86.23%.
在p型和n型半導體材料之間渡越區中的一個面,在這裡施主雜質和受主雜質的濃度相等。
The surface in the transition region between p-type and n-type semiconductor material at which the donor and acceptor concentration are equal.
在實際應用,中在一個半導體晶體上總是同時形成一個n型和一個p型,組成一個正p-n結。
In practical use an n-type and a p-type are created side by side in the same semi-conductor crystal forming a p-n junction.
摘要採用植物化學成分系統研究的方法,從變異黃芪醇提總浸膏中分段萃取得到石油醚提取部分、氯仿提取部分、乙酸乙酯提取部分和正丁醇提取部分。
We got4parts from the extraction of astragalus variabilis bunge through systemic research ways of phytochemistry which respectively are the part of petroleum ether the part of petroleum ether the part of etoa and the part of n-buoh the part of n-buoh are isolated by the successively methods of silica-gel column chromatography tlc and sublimation.
摘要以正己烷為萃取劑,採用毛細管氣相色譜法同時測定生活飲用水及水源水中甲氰菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯和聯苯菊酯五種擬除蟲酯類農藥殘留量。
The analytical method for five pesticide residues of pyrethroid such as fenpropathrin cypermethrin fenvalerate deltamethrin and bifenthrin in potable water and source water determination by capillary gas chromatography at the same time with n-hexane for extracting agent.
這種位置計數法簡單的要求第n個參數,而不帶任何格式說明。
This simple positional notation requests the formatting of the n-th argument-wihout any formatting option.
支援n層程式設計模型。
Support the n-tier programming model.

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