css美化有序列表，貼出部分css代碼 <ol > <li>先涂粉底再涂防曬</li> <li>先涂防曬再涂粉底</li> </ol> <!doctype html> <html> <head> <title>CSS3 ordered list styles - demo</title> <style> body{ margin: 40px auto; width: 500px; } /* -------------------------------------- */ ol{ counter-reset: li; list-style: none; *list-style: decimal; font: 15px 'trebuchet MS', 'lucida sans'; padding: 0; margin-bottom: 4em; text-shadow: 0 1px 0 rgba(255,255,255,.5); } ol ol{ margin: 0 0 0 2em; } /* -------------------------------------- */
上傳時間： 2018-08-22
上傳用戶：53660542
Digital radios have undergone an astonishing evolution in the last century. Born as a set of simple and power-hungry electrical and electromechanical devices for low data rate transmission of telegraph data in the Marconi age, they have transformed, thanks to substantial advances in electronic technology, into a set of small, reliable and sophisticated integrated devices supporting broadband multimedia communications. This, however, would not have been possible unless significant progress had been made in recent decades in the field of signal processing algorithms for baseband and passband signals. In fact, the core of any modern digital radio consists of a set of algorithms running over programmable electronic hardware. This book stems from the research and teaching activities of its co-authors in the field of algorithmic techniques for wireless communications. A huge body of technical literature has accumulated in the last four decades in this area, and an extensive coverage of all its important aspects in a single textbook is impossible. For this reason, we have selected a few important topics and, for ease of reading, organized them into two parts.
標(biāo)簽： Communications Algorithmic Techniques Wireless
上傳時間： 2020-06-01
上傳用戶：shancjb
Electrostatic discharge (ESD) is one of the most prevalent threats to the reliability of electronic components. It is an event in which a finite amount of charge is trans- ferred from one object (i.e., human body) to another (i.e., microchip). This process can result in a very high current passing through the microchip within a very short period of time, and, hence, more than 35% of chip damages can be attributed to an ESD-related event. As such, designing on-chip ESD structures to protect integrated circuits against the ESD stresses is a high priority in the semiconductor industry.
標(biāo)簽： Electrostatic Protection Discharge
上傳時間： 2020-06-05
上傳用戶：shancjb
December 2007, San Jose, California: It seems a long time ago. I walked into a big networking company to head their small Power over Ethernet (PoE) applications team. Surprisingly, I hardly knew anything about PoE prior to that day, having been a switching-power conversion engineer almost all my life. But it seemed a great opportunity to widen my horizons. As you can see, one notable outcome of that seemingly illogical career choice five years ago is the book you hold in your hands today. I hope this small body of work goes on to prove worthy of your expectations and also of all the effort that went into it. Because, behind the scenes, there is a rather interesting story to relate—about its backdrop, intertwined with a small slice of modern PoE history, punctuated by a rather res- tive search for our roots and our true heroes, one that takes us back almost two centuries
上傳時間： 2020-06-07
上傳用戶：shancjb
Despite the development of a now vast body of knowledge known as modern control theory, and despite some spectacular applications of this theory to practical situations, it is quite clear that much of the theory has yet to find application, and many practical control problems have yet to find a theory which will successfully deal with them. No book of course can remedy the situation at this time. But the aim of this book is to construct one of many bridges that are still required for the student and practicing control engineer between the familiar classical control results and those of modern control theory.
標(biāo)簽： Control Optimal Linear
上傳時間： 2020-06-10
上傳用戶：shancjb
Despite the development of a now vast body of knowledge known as modern control theory, and despite some spectacular applications of this theory to practical situations, it is quite clear that some of the theory has yet to find application, and many practical control problems have yet to find a theory that will successfully deal with them. No one book, of course, can remedy the situation. The aim of this book is to construct bridges that are still required for the student and practicing control engineer between the familiar classical control results and those of modern control theory.
標(biāo)簽： Quadratic Optimal Control Methods Linear
上傳時間： 2020-06-10
上傳用戶：shancjb
60個Android開發(fā)精典案例 Android軟件源碼:2-1(Activity生命周期)3-1(Button與點(diǎn)擊監(jiān)聽器)3-10-1(列表之ArrayAdapter適配)3-10-2(列表之SimpleAdapter適配)3-11(Dialog對話框)3-12-5(Activity跳轉(zhuǎn)與操作)3-12-6(橫豎屏切換處理)3-3(ImageButton圖片按鈕)3-4(EditText文本編輯)3-5(CheckBox與監(jiān)聽)3-6(RadioButton與監(jiān)聽)3-7(ProgressBar進(jìn)度條)3-8(SeekBar 拖動條)3-9(Tab分頁式菜單)4-10(可視區(qū)域)4-11-1(Animation動畫)4-11-2-1(動態(tài)位圖)4-11-2-2(幀動畫)4-11-2-3(剪切圖動畫)4-13(操作游戲主角)4-14-1(矩形碰撞)4-14-2(圓形碰撞)4-14-4(多矩形碰撞)4-14-5(Region碰撞檢測)4-15-1(MediaPlayer音樂)4-15-2(SoundPool音效)4-16-1(游戲保存之SharedPreference)4-16-2(游戲保存之Stream)4-3(View游戲框架)4-4(SurfaceView游戲框架)4-7-1(貝塞爾曲線)4-7-2(Canvas畫布)4-8(Paint畫筆)4-9(Bitmap位圖渲染與操作)5-1(飛行射擊游戲?qū)崙?zhàn))6-1(360°平滑游戲搖桿)6-10-1(Socket協(xié)議)6-10-2(Http協(xié)議)6-11(本地化與國際化)6-2(多觸點(diǎn)縮放位圖)6-3(觸屏手勢識別)6-4(加速度傳感器)6-5(9patch工具)]6-6(截屏)6-8(游戲視圖與系統(tǒng)組件)6-9(藍(lán)牙對戰(zhàn)游戲)7-10-1(遍歷body)7-10-2(body的m_userData)7-11(為body施加力)7-12(body碰撞監(jiān)聽)7-13-1(距離關(guān)節(jié))7-13-2(旋轉(zhuǎn)關(guān)節(jié))7-13-3(齒輪關(guān)節(jié))7-13-4(滑輪關(guān)節(jié))7-13-5-1(通過移動關(guān)節(jié)移動body)7-13-5-2(通過移動關(guān)節(jié)綁定兩個body動作)7-13-6(鼠標(biāo)關(guān)節(jié)-拖拽body)7-14(AABB獲取body)7-4(Box2d物理世界)7-5在物理世界中添加矩形)7-7(添加自定義多邊形)7-9(在物理世界中添加圓形)8-1(迷宮小球)8-2(堆房子)
標(biāo)簽： android
上傳時間： 2021-11-30
上傳用戶：trh505
入室搶劫事件屢見不鮮,針對此現(xiàn)象進(jìn)行分析不難發(fā)現(xiàn),造成失竊事件的極大原因是人們慵懶和意識差等不良性格造成習(xí)慣性不鎖門.本文以STC89C52單片機(jī)為基礎(chǔ),設(shè)計了一種基于人體紅外傳感器的自動關(guān)門鎖門裝置,來解決此類問題.The incidents of burglary are so common. It is not difficult to find that the main reason for the burglary is the habit of unlocking of doors caused by people's laziness and poor consciousness. Based on the single chip microcomputer of STC89C52, a device used with infrared sensor of human body is introduced in this paper, which can achieve the effect of automatic closing and locking doors.
上傳時間： 2022-03-27
上傳用戶：canderile
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