聯接表 的英文怎麼說
中文拼音 [liánjiēbiǎo]
聯接表
英文
junction table- 聯 : Ⅰ動詞(聯結; 聯合) unite; join Ⅱ名詞(對聯) antithetical couplet
- 接 : Ⅰ動詞1 (靠近;接觸) come into contact with; come close to 2 (連接; 使連接) connect; join; put ...
- 表 : Ⅰ名詞1 (外面;外表) outside; surface; external 2 (中表親戚) the relationship between the child...
- 聯接 : [電工] strapping; coherence; lashing; link up; coupling; [宇航] mate聯接板 gusset piece; gusset p...
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First, the theory of fretting wear and studies on fretting fatigue were introduced and the parametric method was used in the process of creating the model of dovetail joints in ug software. the elastic contact problem is analyzed in finite element method ( fem ) and is used to the parameters " distribution and contact stress of the joint are obtained on the base of ansys code. with the effect factor of load frequency, the prediction method of fretting fatigue life of dovetail joint under low and high / low cycle complex load is proposed
本文介紹了微動損傷的機理和微動疲勞壽命的研究方法;利用ug軟體對燕尾榫聯接結構創建了參數化實體模型;基於ansys軟體平臺求解彈性接觸問題,獲得了榫聯接結構接觸應力及接觸狀態量的分佈;在已有微動疲勞壽命預測模型的基礎上,引入載荷頻率影響因子,對低周、高低周復合載荷作用下的燕尾榫聯接結構進行了微動疲勞壽命的預測,與試驗結果對比表明採用本文提出的方法預測榫聯接結構的微動疲勞壽命是有效的。And preserves the unmatched rows from the right table
聯接兩個表,並保留右表中不匹配的行。In general, if a significant number of your queries require joins of more than five or six tables, you should consider denormalization
通常,如果有相當多的查詢需要聯接五個或六個以上的表,則應考慮使用非規范化數據庫。A database with the appropriate amount of denormalization reduces the number of tables that have to join together, without adding too much complication to the updating process
如果數據庫適當程度地不合規范,則可以減少必須聯接在一起的表的數目,而不會使更新過程過于復雜。According to the analysis of the table lookup, the graph method and the simulating formula method of selecting bolt diameter without controlling pretightening force under dead load were presented in this paper
摘要通過對查表法資料進行分析,提出了靜載時選擇不控制預緊力的緊螺栓聯接螺栓直徑的圖線法和模擬公式法。At last, the surface of the alumina femoral head was grade - polished with sic micropowder and diamond grinding cream, the join part was trimmed with specific instrument, which made the surface of the alumina femoral head reach the degree of approximating mirror finish and match the femoral stem well. the artificial partial hip joint prostheses was finally got by articulating the alumina femoral head with ti alloy femoral stem coated with bioactive coating
最後,採用sic超細粉和金剛石研磨膏對氧化鋁陶瓷股骨頭表面進行分級拋光,用專用器械修整其聯接部位,得到表面具有近似鏡面光潔度並與股骨柄配合良好的氧化鋁陶瓷股骨頭,並與表面塗覆生物活性塗層的鈦合金股骨柄配伍,最終獲得人工半髖關節假體。The assembly sequence planning method is presented, where the assembly information model is established with the polychromatic sets, and the assembly constrains relations are divided into three kinds, locating relation, obstructing - disassembly relation, and junction relation, to form an assembly - constrains - relation matrix, and to present assembly planning sequences generation algorithm
摘要在新的裝配序列規劃方法中,採用多色集合建立了裝配信息模型,把裝配約束關系分為定位關系、阻礙拆卸關系和聯接關系,建立了裝配約束關系方程定位方程、阻礙拆卸方程和聯接關系方程,用數學方程表示零件的裝配約束條件,同時提出了求取零件裝配序列的演算法。Columns. however, tables can be joined indirectly on
列上直接聯接表。Identifying which columns should be used to join the tables together
確定了應將哪些列用於聯接表。Select the columns that join the tables in the key columns and
在「鍵列」和「外鍵列」列表中選擇聯接表的列。How to : join tables automatically
如何:自動聯接表How to : join tables manually
如何:手動聯接表Specify that tables should be joined using an operator other than equal
指定應使用除等號( = )之外的其他運算符聯接表。Explains various ways to join tables and how to choose what option is best
解釋聯接表的各種方法以及如何選擇最佳方法。This is because primary keys and foreign keys are frequently used to join tables
這是因為通常使用主鍵和外鍵來聯接表。There can be predicates that involve only one of the joined tables in the on clause
在on子句中可能有僅涉及一個聯接表的謂詞。Steps for allowing the query and view designer determine if tables should be joined
讓查詢和視圖設計器決定是否應聯接表的步驟。Specify that joined tables should include rows even when they do not match rows in the corresponding table
指定即使某些行與相應表中的行不匹配,聯接表也應包含這些行。You create such a relationship by defining a third table, called a junction table, whose primary key consists of the foreign keys from both table a and table b. for example, the
通過定義第三個表(稱為聯接表)創建這樣的關系,該表的主鍵由來自表a和表b的外鍵組成。例如,A server instance that contains a copy of a database that can be brought online if the source copy of the database becomes unavailable. star join 1
一種聯接,包括滿足搜索條件的聯接表中的所有行,甚至包括在其他聯接表中沒有匹配行的一個表中的行。分享友人