常用词语结构有：
if … , (then) … 如果…， (那么)…
should / had / were + NP + V … 假如…；假若…
only if … 唯一的条件是…；只要…
in case ... 假使…；假若…
in case of + NP 如果发生…；假如…
in the event of + NP 如果发生…；万一…
on condition of + NP 在…的条件下；如果…
on condition that ... .在…条件下；条件是…
- ing 结构
assuming / presuming + NP / that...假定…
given + NP/that ... 假定…；如果有…；如果已知…
granted that ... 假定…；即使…
provided / providing + (that) ...以…为条件；假如…
suppose / supposing+(that) ... 假定…
so/as long as ... 只要…
unless ... 除非…；如果不…；如果没有…
but for + NP 若不是…；如果没有…
but that ... 要不是…
let + NP + be + NP 假定…；设…
the assumption is made that ... 假定…
subject to + NP 在…条件下
If this problem is to be solved , (then)much more research needs to be done.
如果要解决这个问题， (那么)还需要进行更多的研究。科技英语表达常用句型速查
Had further tests been carried out , the fault would have been discovered .
要是作了进一步的试验，毛病可能就发现了。
In the event of / In case of fire , a11 workers will leave the building .
如果(万一)发生大火，全体工人都要离开大楼。
Using these Values of temperature , the value of x can be found .
如果利用这些温度值，便可求出 x 的值。
Assuming radiation losses to be 5％， Calculate the amount of steam required …
假定辐射损耗为 5％，试算出…所需蒸汽的量。
Given an efficient heat transfer system , a reactor can be used to produce power.
如果有有效的传热系统，反应堆便可用来发电。
The law is true provided that the physical conditions of the circuit remain constant.
如果电路的物理条件保持不变，这一定律是正确的。
Suppose that we observe the same object in two different experiments.
假定我们在两个不同的实验中观察同一物体。
So long as both magnet and coil remain stationary no current is produced.
只要磁铁和线圈两者均保持静止，就不会产生电流。
An observer will not see a rainbow unless there are drops of water suspended in the air.
如果没有小水滴悬在空中，观察者就看不到彩虹。
But for the luminosity of this substance it would be difficult to detect its properties.
要不是这种物质具有发光性，要检测其特性将会很难。
Let P1 be the initial pressure.
设 P1 为初始压力。
Subject to the proviso that/Provided that new sources of power are exploited on a wide scale , present supplies of organic fuel are not likely to exhausted in the foreseeable future.
如果大规模地开发新能源，目前已知的有机燃料储量在可以预见到的未来就不可能耗尽。
上一篇：英中对照叙述，基本翻译方法
下一篇：英中对照科技英语后置修饰语
微信公众号搜索“译员”关注我们，每天为您推送翻译理论和技巧，外语学习及翻译招聘信息。