翻译 The superficial surface microstructure investigations carried out by SEM and EBSD reveal the influence of LAMill process on the machined workpiece. It is interesting that the LAMill machined workpiece (using parameters selected by solving the inverse problem [19]) presents less damage in reference to grain alternation (white layer and material drag) and misorientation depth in the superficial surface when compared with CMill workpiece. This phenomenon is attributed to the 3D uniformly distributed laser heating effect resulting in a controlled softening depth of the workpiece which is subsequently removed by the machining process; this has been validated by putting in evidence the re-solidified layer on LS samples as well as the melt-like layer found in LAMill generated chips. Besides, the less broaden peaks of LAMill sample in XRD patterns also indicates that LAMill process presents a thinner grain refinement layer (white layer) compared with CMill one which showed broaden XRD peaks
时间: 2023-02-26 08:57:03 浏览: 55
通过 SEM 和 EBSD 进行的表面微结构调查显示了 LAMill 加工对加工件的影响。有趣的是,通过解决逆问题选择参数加工的 LAMill 加工件 ( [19] ) 与 CMill 加工件相比,在表面上损伤(白层和材料拖曳)和偏斜深度方面较少。这种现象归因于 3D 均匀分布的激光加热效应,导致工件的控制软化深度,随后被加工过程删除;这已通过在 LS 样品上证明再固化层以及在 LAMill 生成的芯片中发现的熔融层来证实。此外,LAMill 样品在 XRD 图案中的峰值较窄也表明 LAMill 加工过程比 CMill 加工过程具有更薄的粒细化层(白层),而 CMill 加工过程显示了加宽的 XRD 峰值。
相关问题
SQL实现图书管理完整代码
以下是一个简单的 SQL 实现图书管理系统的完整代码:
创建书籍信息表:
```sql
CREATE TABLE books (
id INT AUTO_INCREMENT PRIMARY KEY,
title VARCHAR(255) NOT NULL,
author VARCHAR(255) NOT NULL,
publisher VARCHAR(255) NOT NULL,
publish_date DATE NOT NULL,
price DECIMAL(7, 2) NOT NULL,
isbn VARCHAR(20) NOT NULL,
summary TEXT,
status ENUM('available', 'borrowed') NOT NULL DEFAULT 'available'
);
```
创建借阅记录表:
```sql
CREATE TABLE borrow_records (
id INT AUTO_INCREMENT PRIMARY KEY,
book_id INT NOT NULL,
borrower_name VARCHAR(255) NOT NULL,
borrow_date DATE NOT NULL,
return_date DATE,
FOREIGN KEY (book_id) REFERENCES books(id)
);
```
插入一些书籍信息:
```sql
INSERT INTO books (title, author, publisher, publish_date, price, isbn, summary)
VALUES
('The Great Gatsby', 'F. Scott Fitzgerald', 'Charles Scribner\'s Sons', '1925-04-10', 12.99, '978-0743273565', 'The story primarily concerns the young and mysterious millionaire Jay Gatsby and his quixotic passion and obsession for the beautiful former debutante Daisy Buchanan.'),
('To Kill a Mockingbird', 'Harper Lee', 'J. B. Lippincott & Co.', '1960-07-11', 10.99, '978-0061120084', 'The novel is renowned for its warmth and humor, despite dealing with serious issues of rape and racial inequality.'),
('1984', 'George Orwell', 'Secker and Warburg', '1949-06-08', 9.99, '978-0451524935', 'The novel is set in Airstrip One, a province of the superstate Oceania in a world of perpetual war, omnipresent government surveillance, and public manipulation.'),
('Pride and Prejudice', 'Jane Austen', 'T. Egerton', '1813-01-28', 7.99, '978-0486284736', 'The novel follows the character development of Elizabeth Bennet, the dynamic protagonist of the book who learns about the repercussions of hasty judgments and comes to appreciate the difference between superficial goodness and actual goodness.'),
('One Hundred Years of Solitude', 'Gabriel García Márquez', 'Harper & Row', '1967-05-30', 14.99, '978-0060883287', 'The novel tells the multi-generational story of the Buendía family, whose patriarch, José Arcadio Buendía, founds the town of Macondo, the metaphoric Colombia.');
```
借阅一本书:
```sql
INSERT INTO borrow_records (book_id, borrower_name, borrow_date)
VALUES
(1, 'John Smith', '2021-01-01');
```
归还一本书:
```sql
UPDATE borrow_records
SET return_date = '2021-01-10'
WHERE book_id = 1;
```
查找所有可借阅的书籍:
```sql
SELECT * FROM books
WHERE status = 'available';
```
查找某个作者的所有书籍:
```sql
SELECT * FROM books
WHERE author = 'Jane Austen';
```
二维电阻阵列读出电路
二维电阻阵列的读出电路可以采用组合电路和时序电路的结合方式。其中,组合电路用于选择并读取特定的电阻元件,而时序电路用于控制读取操作的时序和顺序。通常,读出电路的设计需要考虑到电阻阵列的规模、电阻元件的阻值范围和分辨率要求。
在具体的实现中,可以使用传输门和反相器构建组合电路。传输门用于选择特定的行和列,以使得读取操作只针对所选的电阻元件。反相器则用于将读取信号进行反相和放大,以提供有效的输出信号。
需要注意的是,二维电阻阵列的读出电路的具体设计会根据不同的应用场景和需求而有所不同。因此,在实际应用中需要根据具体的情况进行设计和优化。