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w || 胡克定律
Hooper engine || 虎珀发动机
Hotchkiss drive || 霍奇凯斯传动
Huffman Tree || 哈夫曼树
Huffman code || 霍夫曼码
Hurtree || 哈特里(一种能量单位)
Hydrocarbon || 烃 [HC]
habitay || 水下居住室(舱)
hack iron || 十字镐，鹤嘴锄
hack-file || ①手锯②刀锉
hacked bolt || 棘螺栓
hackling machine || 疏理机，梳棉机，梳麻机
hackly-fracture || 锯齿形断口
hacksaw || 弓锯，钢锯
hacksaw blade || 弓锯条，钢锯条
hacksaw cutter || 钢锯铣刀
hacksaw machine || 弓锯床，锯床，金属锯床
haematite || 赤铁矿
hafnium || 铪Hf(72)
hafnium oxide thin film capacitor || 氧化铪薄膜电容器
hahnium || Ha(105)
hailer || ①高声信号器②汽笛，电笛
hair || ①金属丝，游丝②微动弹簧③毛发
hair checking || 发裂，发丝裂缝
hair compasses || 弹簧圆规
hair crack || 细裂缝，细裂纹，发裂
hair cracking || 发纹，发裂，发丝裂缝
hair dividers || 弹簧两脚规，弹簧分规
hair hygrograph || 毛发湿度计
hair hygrometer || 毛发湿度表
hair line || 发纹
hair spring || ①游丝②丝极，灯丝③细弹簧
hair-pin winding || 发卡形绕组
hair-wire || 游丝
hairline || 发丝，细缝
hairline crack || 发裂，发丝裂缝
hairpin || 发针，发卡
hairpin valve spring || 发卡阀簧
half cab || 侧置驾驶室
half adder || 半加法器
half axle || 半轴
half band width || 半带宽，半谱带宽度
half block || 半数据块
half breadth || 半宽(度)
half bridge || 半电桥
half bridge measurement || 半桥测量
half capacity operation || 半负荷运行
half coil || 半(节)线圈，线圈边，线棒
half coil space || 半加感节距
half crystal || 半晶体，半晶质玻璃
half current || 半选电流
half cycle || 半周(期)
half cycle transmission || 半周传输
half duplex transmission || 半双工传输
half elliptic spring || 半椭圆弹簧
half life || 半衰期
half line || 半直线，半行
half load || 半负载，半负荷
half loading section || 半加感段
half martensite || 半马氏体
half mode || 半模型
half mould || 半型，半模，敞口模
half nut || 对开螺母，开合螺母，开缝螺母
half open interval || 半开区间
half path || 半通路
half period || 半衰期
half periodic solution || 半周期解
half pitch winding || 半节距绕组，半节距绕法
half plane || 半平面
half polar line || 半极线
half power || 半功率
half power beamwidth || 半功率射束宽度
half reaction || 半反应
half rear axle || 半后轴
half round file || 半圆锉
half section || 半节
half shaft || 半轴
half side formula || 半边公式
half space || 半空间
half speed || 半速(度)
half tap || 半抽头
half tone || ①半音度②半色调，中间色调③浓淡点图
half tone characteristic || 半色调特性(传真通信)
half tone method || 半色调法
half tone screen || 半色调屏
half turn || 半匝，半圈
half voltage || 半电压
half width || 半宽(度)
half-anchor ear || 半锚杆环
half-anchor pole || 半锚杆
half-anchor tower || 半锚塔，半锚式杆架
half-bubble || 半磁泡
half-carry || 半进位
half-cell || ①半胞腔②半电池
half-coiled winding || 半(节)线圈绕组(节)线圈绕法
half-confocal cavity || 半共焦腔
half-core-box core || 半边心盒制型心
half-countersunk rivet head || 半埋头式铆钉头
half-cupped fract
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