Num Trainer vs 钻石原石规划向导

Num Trainer is a brain training app for faster number skills. Four focused games build attention, memory, reaction speed, mental math and logic in short sessions you can fit into any day. NEW: GLOBAL LEADERBOARDS Sign in to Game Center and your fastest times are ranked worldwide. There is a leaderboard for every game and every difficulty, so you always compete on equal rules. Not signed in? Everything still works and your records stay on your device. FOUR TRAINING GAMES • Mental Math – solve addition, subtraction, multiplication and division against the clock, from Beginner to Expert. • Number Pairs – memorise card positions and match every identical pair. • Tap in Order – a Schulte-table style challenge: find and tap numbers from smallest to largest as fast as you can. • Digit-by-Digit Math – remember a number, then transform each digit with the same step. TRACK YOUR PROGRESS Training History charts your latest, best and median time for every game and difficulty. Open the record list to review each session and the exact settings you played. SIMPLE AND FOCUSED Clean, distraction-free design, light and dark appearance, English, Simplified Chinese, Spanish and Japanese. No ads, no in-app purchases and no account required.

一颗钻石原石，可以怎样规划成不同的成品？ 钻石原石规划向导通过可操作的三维教学案例，帮助珠宝学习者、从业者和对钻石加工感兴趣的用户，理解原石外形、切割面、模拟内含物与成品组合之间的关系。 从五颗教学原石开始，选择琢型、成品粒数和规划目标，由 SUVA 规划引擎在本机计算方案。比较成品重量、保重率、最大主石与模拟估值，再动手改变切面，观察一次调整如何影响结果。 主要功能： • 五颗程序生成的教学原石，覆盖不同外形与模拟内含物分布。 • 八种琢型，每次最多规划四粒成品。 • 比较价值、保重与主石目标，查看不同成品组合。 • 旋转和缩放三维模型，拖动切面或用按钮逐步精调。 • 还原为计算结果，并可撤销这次还原。 • 逐刀查看锯切、料块分离与抛光成品。 • 内置学习指南，通过对照练习理解方案取舍。 核心功能无需注册、无需 PC 软件，在设备本机完成计算。适用于 iPhone 与 iPad。 使用范围：本 App 使用教学案例和模拟内含物，当前不导入真实扫描、不保存项目；切换原石或关闭 App 后，手动调整可能不再保留。净度、比例等级、价格及汇率采用简化教学模型，结果仅供学习与方案比较，不构成鉴定、报价、交易或实际加工依据。 由苏州苏哇科技有限公司开发。