Attendance at these lectures is not compulsory.
这些课不是硬性规定要听的。
Attendance at evening prayers is not compulsory.
参加晚祷并非硬性规定.
The material with high water is a new water - hardening inorganic gelling material.
高水材料是一种新型水硬性无机胶凝材料,水灰比高达3.0.
This depends -- not all airports enforce it at all times.
这依情形而定 -- 并非所有的机场都硬性规定要有.
Line film: High contrast blue light sensitive ( colour blind ) film.
线条菲林(硬性菲林): 高反差的蓝光敏感 ( 色盲 ) 菲林.
How does hamstring rigid contusion do?
腿筋硬性挫伤怎么办?
Children: the rules will result in rebelliousness.
学生: 硬性规定可能会引起叛逆心理.
Tough and chemical resistance of epoxy resin.
具有环氧树脂的坚硬性耐化学品性.
The house was run along rigidly hierarchical lines.
内务运行沿硬性分层线.
We are committed to no rigid formula.
我们未必矢志坚持任何硬性方案.
Arbitrarily fixed prices and arbitrarily limited profits can only prolong shortages and reduce production and employment.
硬性管制价格和硬性管制利润,只会使供不应求拖延更久,并使生产和就业下滑.
Add the warm gelatine mixture into the cream and beat until the stiff peak forms.
将吉利液加入,然后搅拌干硬性发泡.
The potential for solidity is always there.
坚硬性的潜势,一直是在那里的.
Brackets shall be spaced at proper intervals to provide rigidity and parallelism.
平台之间应该有适当的空间间隔,这样有利于提高坚硬性和平行性.
Therefore, we consider it appropriate to make a mandatory standard.
因此, 我们认为不宜在标准中作硬性规定.