社评触“早就想在公园要你了”-艺文笔记
也就是说鱼类跟寄生虫很容易发生接触,当我们把鱼类作为食物端上餐桌时,一定不要忽视了这点。
2025年01月12日,就像被龙卷风吸进神奇的黑洞
社评触“早就想在公园要你了”-艺文笔记
值得收藏PCB设计中英文字母2021-10-08 09:00·西小沐雪PCB设计规则中英文对照Electrical(电气规则)Clearance:安全间距规则Short Circuit:短路规则UnRouted Net:未布线网络规则UnConnected Pin:未连线引脚规则Routing(布线规则)Width:走线宽度规则Routing Topology:走线拓扑布局规则Routing Priority:布线优先级规则Routing Layers:布线板层线规则Routing Corners:导线转角规则Routing Via Style:布线过孔形式规则Fan out Control:布线扇出控制规则Differential Pairs Routing:差分对布线规则SMT(表贴焊盘规则)SMD To Corner:SMD焊盘与导线拐角处最小间距规则SMD To Plane:SMD焊盘与电源层过孔最小间距规则SMD Neck Down:SMD焊盘颈缩率规则Mask(阻焊层规则)Solder Mask Expansion:阻焊层收缩量规则Paste Mask Expansion:助焊层收缩量规则Plane(电源层规则)Power Plane Connect Style:电源层连接类型规则Power Plane Clearance:电源层安全间距规则Polygon Connect Style:焊盘与覆铜连接类型规则TestPoint(测试点规则)Testpoint Style:测试点样式规则TestPoint Usage:测试点使用规则Manufacturing(工业规则)MinimumAnnularRing: 焊盘铜环最小宽度规则防止焊盘脱落Acute Angle:锐角限制规则Hole Size:孔径限制规则Layer Pairs:配对层设置规则设定所有钻孔电气符号(焊盘和过孔)的起始层和终止层Hole To Hole Clearance:孔间间距桂鄂Minimum SolderMask Sliver:最小阻焊间隙违反规则Silkscreen Over Component Pads:丝印与元器件焊盘间距规则Silk To Silk Clearance:丝印间距规则Net Antennae:网络天线规则High Speed(高频电路规则)ParallelSegment:平行铜膜线段间距限制规则Length:网络长度限制规则Matched Net Lengths:网络长度匹配规则Daisy Chain Stub Length:菊花状布线分支长度限制规则Vias Under SMD:SMD焊盘下过孔限制规则Maximum Via Count:最大过孔数目限制规则Placement(元件布置规则)Room Definition:元件集合定义规则Component Clearance:元件间距限制规则Component Orientations:元件布置方向规则Permitted Layers:允许元件布置板层规则Nets To Ignore:网络忽略规则Hight:高度规则Signal Integrity(信号完整性规则)Signal Stimulus:激励信号规则Undershoot-Falling Edge:负下冲超调量限制规则Undershoot-Rising Edge:正下冲超调量限制规则Impedance:阻抗限制规则Signal Top Value:高电平信号规则Signal Base Value:低电平信号规则Flight Time-Rising Edge:上升飞行时间规则Flight Time-Falling Edge:下降飞行时间规则Slope-Rising Edge:上升沿时间规则Slope-Falling Edge:下降沿时间规则Supply Nets:电源网络规则(图文来源自网络)
基本的能把衣服洗干净,减震低噪之类,这些我就不提了。而与此相反的是新兴的金国军队在辽国土地上的势如破竹,飞扬跋扈,几乎没用多长时间就让曾经碾压宋朝的辽国奄奄待毙。