Roland K Ashworth 的 KDP 数据
截至 2026 年 11 月 6 日,Roland K Ashworth 在 Amazon 有 17 本书,近 30 天有 14 本上过榜,最好排名 #7,主要在Mechanics、Aeronautical Engineering、Propulsion Technology。
17Amazon 上的书
14近 30 天上榜书
4.8平均评分
| 价格中位数 | $63.87 |
|---|---|
| 价格区间(中间 50%) | $52 – $80.24 |
| 评论中位数 | 2 |
| 评论总数 | 45 |
| 近 30 天新书 | 9 |
| 近 30 天突围新书 | 5 |
数据解读
- 近 30 天 82% 的书上过榜,整个书目都在卖,不靠单本。
- 定价中位 $63.87,比主类目「Mechanics」的中位价高 55%。
- 近 30 天新上 9 本,其中 5 本冲进了畅销榜。
Roland K Ashworth 排名最好的书
-
ROCKET PROPULSION FUNDAMENTALS 2026: Engine Design, Combustion, and Thrust Systems for Aerospace Engineers (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$79.99
- 评分5.0
- 评论2
-
TEXTBOOK OF AEROSPACE ENGINEERING: A Complete Guide to Flight, Propulsion, and Spacecraft Systems (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$119
- 评分5.0
- 评论5
-
AN ILLUSTRATED INTRODUCTION TO ROBOTICS ENGINEERING: A Beginner's Guide to Mechanisms, Sensors, and Control Systems (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$60
- 评分5.0
- 评论3
-
OSHA CONSTRUCTION INDUSTRY REGULATIONS & STANDARDS MANUAL: A Complete Compliance Field Reference to 29 CFR 1926 — Hazard Control, Inspection ... Management (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$39.99
- 评分5.0
- 评论2
-
AN ILLUSTRATED INTRODUCTION TO ORBITAL MECHANICS FOR ENGINEERS: A Practical Guide to Satellite Motion, Launch, and Mission Planning (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$54.27
- 评分4.0
- 评论5
-
An Illustrated Introduction To Fluid Mechanics: A Visual Foundation for Understanding Flow, Pressure, and Motion in Liquids and Gases (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$59.42
- 评分3.0
- 评论2
-
ILLUSTRATED AVIATION MAINTENANCE TECHNICIAN MANUAL: A Comprehensive Field and Reference Guide to Airframe, Powerplant, and Systems Maintenance Practice (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$33.79
- 评分5.0
- 评论1
-
PRINT READING HANDBOOK FOR ELECTRICIANS 2026: Master Blueprints, Schematics, One-Line Diagrams, Panel Schedules, and Symbols with 2026 Electrical ... (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$66.03
- 评分5.0
- 评论2
-
ILLUSTRATED INDUSTRIAL ELECTRICITY AND MOTOR CONTROLS HANDBOOK: A Practical Reference for Electricians, Technicians, and Industrial Maintenance Engineers (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$75
- 评分5.0
- 评论2
-
THE COMPREHENSIVE TEXTBOOK OF ELECTRICITY: A Complete Guide to Circuits, Fields, and Power Systems (The Ashworth Engineering Library)
作者 Roland K Ashworth
- 价格$75.26
- 评分5.0
- 评论3
- 出版2026-07
主要上榜类目
常见问题
Roland K Ashworth 在 Amazon 有多少本书?
KDPTop 跟踪到 17 本,近 30 天有 14 本上过 Amazon 榜单。
Roland K Ashworth 主要写哪些类目?
上榜最多的类目是Mechanics、Aeronautical Engineering、Propulsion Technology。
Roland K Ashworth 的书一般卖多少钱?
定价中位数 $63.87,一半的书在 $52–$80.24 之间。
Roland K Ashworth 最近出新书了吗?
近 30 天新上 9 本,其中 5 本进了畅销榜。
数据说明
数据来自 KDPTop 每天对 Amazon 公开榜单页面的抓取,中位数基于最新一期畅销榜。机会分综合了评论门槛、低评论书占比、榜单更替、新书占比和价格,0–100 分,越高越容易进入。