Presents the model proposed for analyzing the vibration characteristics of shrouded blades and their calculation method by employing a wave propagation theory and modal synthesis technology coupled with a finite element method from the view point it is possible not only to conduct frequency modulation of the shrouded blades of a gas turbine, but also to utilize the friction effects between them to dissipate energy, thereby attaining the aim of vibration alleviation, as shrouded blades have been widely used in the design of high - speed turbomachinery, such as modern gas turbines and steam turbines, and with the shrouded blades forming an integral whole in a centrifugal force field, the vibration characteristics of the whole ring of blades are different from those of a single isolated blade, and this makes it essential to take into account the integral effect of blade shrouds, concludes from the calculation examples and engineering application that the above approach is valid and correct along with the possibility of considerably reducing the scale of calculation and analysis, and points out it is necessary to take into consideration the coupled effect of the whole ring of blades while the dynamic characteristics of shrouded blades is being analysed
帶冠葉片不但能調頻，還可以利用葉冠之間的摩擦效應來耗散能量，達到減振的目的.
帶冠葉片在離心力場中形成一整體，其整圈葉片振動特性不同於單個孤立葉片，需考慮葉冠的整體效應.利用
帶冠葉片系統的循環對稱性，提出了採用波傳播理論和模態綜合技術，結合有限元方法研究燃氣輪機
帶冠葉片振動特性的分析模型和計算方法.算例和工程應用證
明了該方法是效性的、正確的，並可以大大降低計算分析規模.研究表
明帶冠葉片動力特性分析時必須考慮整圈葉片的耦合效應
Objective the present study was to investigate the effects of endotoxin on capacitation and acrosome reaction ( ar ) of mouse, golden hamster and human sperm, on the sperm - oocyte fusion in mouse, and on the development of 1 - cell, 2 - cell and zona - free 2 - cell mouse embryos in vitro. the purpose was to definite the committed step and the mechanism during in vitro fertilization ( ivf ) on which endotoxin affected, and to distinguish the sensitivities to endotoxin of three developmental systems of mouse embryos. all these data would provide the reference to clinical and laboratory quality control
目的研究內毒素對小鼠、金黃地鼠及人精子的體外獲能和頂體反應、小鼠精卵結合及小鼠1 -細胞、 2 -細胞和去卵透
明帶2 -細胞胚胎體外發育的影響，探討內毒素影響體外受精結局的環節及可能的機制，確定三個體外培養系統對內毒素的敏感性，以期為臨床和實驗室質量控制提供參考。
This result may indicate that the effect of pmrs on fertilization ability is not in sperm - zona pellucida recognition, but in sperm - egg fusion
提示人精子mr在精子與透
明帶識別中可能不起介導作用，其對精卵融合能力可能具有影響。
In order to detect the effect of human sperm mannose - ligand receptor on the fertilization ability, in the study reported here mannose - ligand receptors ( mrs ) were purified from human sperm by modified mannose - agarose gel affinity chromatography coloumn and determined protien concentration by lowry, preincubated zona - free hamster oocytes with four purified mannose - ligand receptor ( pmr ) concentrations before sperm penetration assay ( spa ) to test the pmrs cell biology nature of inhibition to fertilization
本研究用改良后的親和層析法分離純化mr ， lowry法測定其蛋白質濃度，在精子穿透試驗（ spermpenetrationassay ， spa ）模型中定量研究其對精卵融合能力的影響並檢測其細胞生物學活性；以已知濃度的pmr （ purifiedmannose - ligandreceptor ）干預精子半透
明帶試驗，觀察用pmr預處理半透
明帶對精子與透
明帶結合的影響。
The corpse of madame de villefort was stretched across the doorway leading to the room in which edward must be ; those glaring eyes seemed to watch over the threshold, and the lips bore the stamp of a terrible and mysterious irony
維爾福夫人的屍體橫躺在門口，愛德華一定在房間裏面。那個屍體似乎在看守房門，眼睛瞪著，臉上分
明帶著一種可怕的神秘的譏諷的微笑。
Lastly, the invention of the automobile has resulted in many new industries being formed
最後，汽車的發
明帶來了許多新興產業。
Invention of gear - driven switch with " zither " ( piano wire ) line banks. not used commercially. 200 - line " zither " board with ratchet drive installed at laporte, indiana, usa
發
明帶有「齊特琴」 （鋼琴絲）式接線排的齒輪傳動交換機。沒有用於商業。美國印第安納州拉波特安裝了
帶有棘齒驅動的200線路「齊特琴」主板。
There is no powerful medicine for curing the mysterious strain of influenza with its complications, for it is resistant to current antibiotics
現在還沒有治療這種起因不
明、
帶並發癥的流行感冒的特效藥，因為它對現有的抗菌素具有抗藥性。
The results indicate : naval ships with built - up stabilizing appendage are not only full - navigating in the higher conditions, but improve the sea - keeping
結果表
明，
帶減縱向運動組合附體的船型不但能在較高海情下全速航行，並可提高其適航性。
Designing idea : on the day of the diversiform information, the sound of the new world rouses the earth we love deeply which loads the orient civilization and fly with the florid fashion color
設計構思：在信息多元的今天，響徹世界的時代新聲喚醒了我們深愛的這片熱土，她承載著悠遠的東方文
明，
帶著絢麗的時尚色彩展翅騰飛。
Pu xiaochun, ji weizhi, yang shangchuan, chen jianchun, zou rujin, and shang enyuan 1994 correlation of zona - binding with oocyte matoration and sperm motility in rhesus monkeys by hemizona assay
普曉春、季維智、楊上川、陳建春、鄒如金、商恩緣1994獼猴的半透
明帶分析法精子活動度和卵母細胞成熟度對精卵結合率的影響。
So for some special patients, zona drilling or local zona thinning with increased z ptv may help embryo hatching. at the same time, different types of assisted hatching have been developed, such as mechanical tearing, chemical digesting and laser burning
因此，對一些特殊病人進行透
明帶打孔或局部減薄提高zptv或許有助於胚胎孵出及種植；與此同時，多種輔助孵出方法也在被人們嘗試使用，如機械切割法、酸化學溶解法和新近使用的激光燒灼法。
Sudies on the trannsmission of phytophthora root rot of soybean had been carriedout with the soil debris and the seeds which came from natural diseased fields as well as thesoil and seeds which inoculated with the pathogen
對
帶菌土壤、病殘體進行傳病試驗，研究了人工接種條件下種子
帶菌條件及
帶菌種子傳病情況，結果表
明，
帶菌土壤和病殘體無論是在當年還是越冬后都可有效地傳播大豆疫霉根腐病，是大豆疫霉根腐病的主要初侵染源和傳播途徑。
The role of nuchal translucency in prenatal screening
胎兒頸部透明帶厚度檢測在產前篩查中的應用
