查询词典 let down

up-and-down indicator：紧松指示器,松紧指示器,走时指示器

up-and-down draught kiln ==> 倒焰窑 | up-and-down indicator ==> 紧松指示器,松紧指示器,走时指示器 | up-and-down locks ==> 安全锁

up-and-down line：到發線

11063 up-and-down hump yard 雙向駝峰編組站 | 11064 up-and-down line 到發線 | 11065 up-and-down track 到發線

up-and-down motion：垂直方向往复运动

up-and-down maneuver ==> 升降机动 | up-and-down motion ==> 垂直方向往复运动 | up-and-down movement ==> 垂直往复运动,垂直运动,升降运动,上下运动

up-and-down traffic：上下行運行

11065 up-and-down track 到發線 | 11066 up-and-down traffic 上下行運行 | 11067 up-and-down trains 上下行列車

step-down ratio：降压比

step down n. 缩小 | step down ratio 降压比 | step down side 降压侧

step-down substructure：阶梯式基座

step-down method逐渐减少分配法 | step-down substructure阶梯式基座 | step-down transformer降压变压器

b.He set down the book on the bable：他把书放在桌上

eg. a. Set down his name and address. 记下他的名字和地址. | b.He set down the book on the bable . 他把书放在桌上. | c. I set the man down as a solier. 我以为那人是个士兵.

screw-down valve：螺杆阀

screw down stop vlave 截止阀 | screw down valve 螺杆阀 | screw down valve 螺旋阀

screw-down stop check valve：截止止回阀

截止止回安全阀 screw-down stoop check and safety valve | 截止止回阀 screw-down stop check valve | 截止止回节流阀 screw-down stop check and throttle valve

breaking down field strength：击穿场强

breaking down dield strength 击穿场强 | breaking down field strength 击穿场强 | breaking down point 断裂点

locating center punch：定位中心冲头

lining 内衬 | locating center punch 定位中心冲头 | locating pilot pin 定位导梢

Humours：(幽默) (幽默) 幽默

13 Euphemism (委婉) (委婉) 委婉 | 14 Grotesque (怪诞) (怪诞) 怪诞 | 15 Humours (幽默) (幽默) 幽默